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2025 一个神奇的数字

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AI-generated summary
The number 2025 is notable because it can be expressed as both the square of 45 (2025 = 45²) and as the sum of the cubes of the first nine integers (2025 = 1³ + 2³ + 3³ + 4³ + 5³ + 6³ + 7³ + 8³ + 9³).

冷知识 2025 是一个特殊的数字：
2025 = 45²
2025 = 1³ + 2³ + 3³ + 4³ + 5³ + 6³ + 7³ + 8³ + 9³

ai-generated-9107853_1280

new-year-9110412_1280

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