Six hundred twenty five million
six hundred twenty-five million. Don't stick an "and" in there (not "six-hundred and 25 million), as "and" usually denotes the decimal place (i.e. 6.25 is six and 25 hundredths)
625 000 000
This number is four quadrillion.
Six hundred billion.
Thirty-five billion.
Six million.
twelve million
fifteen million
70,000,000,000 is written as: seventy billion.
Two hundred eighty million.
Six hundred twenty-five percent.