7 thoughts on “January 3, 2025: Couches”

  1. Here are some more fun 2025 facts:

    (20+25)² = 2025
    (1+2+3+4+5+6+7+8+9)*2 = 2025
    The sum of the first 45 consecutive odd numbers: 1 + 3 + 5 + 7 + ... + 89 = 2025
    The product of 2 squares: 9² x 5² = 2025
    The sum of three squares: 40²+ 20²+5² = 2025

    There's a bunch more that are way too mathy for me (10 abelian groups of order 2025, something about integer triangles, many others beyond me), but I think it's all pretty cool. Someone go get Greekhouse in here.

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