How to read $2,500?
twenty-five hundred dollars or
two thousand and five hundred dollars?
Which is more common?

Question

Answer

It really depends on the person. Both are equally common. For example, a person working at a store would probably say two thousand five hundred just to be clear. But when talking among friends a person might say twenty five hundred because it's shorter. 
You can say whichever one you like best.

Answer

In the UK, we would say either 'two and a half thousand' or 'two thousand, five hundred'. The 'twenty five hundred' approach isn't really used, except sometimes for numbers between 1100 and 1900.. Eleven hundred, twelve hundred etc..

Answer

two and a half thousand dollars