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📰 Thus, the value is $ oxed{133} $.Question: How many lattice points lie on the hyperbola $ x^2 - y^2 = 2025 $? 📰 Solution: The equation $ x^2 - y^2 = 2025 $ factors as $ (x - y)(x + y) = 2025 $. Since $ x $ and $ y $ are integers, both $ x - y $ and $ x + y $ must be integers. Let $ a = x - y $ and $ b = x + y $, so $ ab = 2025 $. Then $ x = rac{a + b}{2} $ and $ y = rac{b - a}{2} $. For $ x $ and $ y $ to be integers, $ a + b $ and $ b - a $ must both be even, meaning $ a $ and $ b $ must have the same parity. Since $ 2025 = 3^4 \cdot 5^2 $, it has $ (4+1)(2+1) = 15 $ positive divisors. Each pair $ (a, b) $ such that $ ab = 2025 $ gives a solution, but only those with $ a $ and $ b $ of the same parity are valid. Since 2025 is odd, all its divisors are odd, so $ a $ and $ b $ are both odd, ensuring $ x $ and $ y $ are integers. Each positive divisor pair $ (a, b) $ with $ a \leq b $ gives a unique solution, and since 2025 is a perfect square, there is one square root pair. There are 15 positive divisors, so 15 such factorizations, but only those with $ a \leq b $ are distinct under sign and order. Considering both positive and negative factor pairs, each valid $ (a,b) $ with $ a 📰 e b $ contributes 4 lattice points (due to sign combinations), and symmetric pairs contribute similarly. But since $ a $ and $ b $ must both be odd (always true), and $ ab = 2025 $, we count all ordered pairs $ (a,b) $ with $ ab = 2025 $. There are 15 positive divisors, so 15 positive factor pairs $ (a,b) $, and 15 negative ones $ (-a,-b) $. Each gives integer $ x, y $. So total 30 pairs. Each pair yields a unique lattice point. Thus, there are $ oxed{30} $ lattice points on the hyperbola. 📰 Estarossa 2639246 📰 Studio Movie Grill Duluth 1366725 📰 Rcazy Games 1692894 📰 Master Java Equals Method Todayno Java Decoder Left Behind 2188413 📰 Water Filtration System For Lead 8282319 📰 The Boys Next Season 7267332 📰 Wells Fargo Checking Account Bonus Offers 1104558 📰 Shang Tsungs Secrets Revealedwhy Hes The Ultimate Tragic Villain 7122706 📰 Aconex Secrets You Didnt Knowthis One Tool Changed My Workflow Forever 7950492 📰 Strike Out Excel Mistakes Your Secret Weapon For Faster Spreadsheets 1614694 📰 Seattle To New York Flights 5209915 📰 Astroneer 2 4569731 📰 How Many People Were Killed In Hiroshima 64181 📰 Butler Pitch And Putt 617554 📰 Capital One Savings Interest Rate 2537257