@pfsmet@mastodon.social Interesting 2025 1) 2025, itself is a square (45 x 45) 2) It's a product of two squares: 9² x 5² = 2025 3) It is the sum of 3-squares: 40² + 20² + 5² = 2025 4) It's the first square after 1936 (44 x 44) 5) It's the sum of cubes of all the single digits: from 1 to 9 it would be 1³+2³+3³+4³+5³+6³+7³+8³+9³= 2025. This is going to be our UNIQUE YEAR. https://albertocalva.substack.com/p/next-year-2025-is-a-mathematical #2025 #maths