My favourite number!
I'm not entirely sure as to why... So I thought I would see what is interesting about it.
It divides into 100: 4 x 25 = 100
5 divides into it 5 times
25 = 5 squared
The root of 25 is 5
Reversing it, i.e. 52, it represents the numbers of weeks in a year
2 times 5 = 10 : A nice round number
I found some very cool facts on the web: click here
Considering all these facts, I still like 25 the most.