My guess is because we say them in big endian: "five thousand two hundred five"
As to why we say them in big endian, I am less sure.. Could it be because we go for important stuff first? "This costs five hundred two..." "-OK, that's too much"
(this stack exchange answer seems to agree: [0])
[0] https://math.stackexchange.com/questions/3038638/why-do-we-o...
