2025 is a Strange Number

Video Description

2025 is an unusually interesting number for a number of reasons we discuss. 2025 is a perfect square, it is a sum of cubes, it is the square of the sum of consecutive integers, it is the year 45^2 in which those born in 1980 turn 45, and so much more! In most depth we'll discuss spanning trees and the number of spanning trees a complete bipartite graph has. #maths #mathematics I just launched a math fashion brand at https://mathshion.com/ Check it out and pick up some of the coolest math merch of all time! Join Wrath of Math to get exclusive videos, lecture notes, and more: https://www.youtube.com/channel/UCyEKvaxi8mt9FMc62MHcliw/join sources: https://www.numbersaplenty.com/2025 https://www.reddit.com/r/math/comments/1hq2oia/what_are_the_coolest_facts_about_the_number_2025/ https://mathshistory.st-andrews.ac.uk/Biographies/De_Morgan/ Pearls in Graph Theory by Nora Hartsfield and Gerhard Ringel 0:00 Intro 0:53 A Square! 2:38 More Squares 4:00 An Old Floutist 5:07 Sum of Cubes 6:45 Multiplication Table 8:01 Cute Factorizations 11:01 1223334444 14:27 Spanning Trees