I own three hundred and twenty-five Pokemon cards.
Why is twenty-five hyphenated? Why is “three hundred” left out? I don’t know. That’s just the rule. Numbers 21-99 are hyphenated, even if they’re preceded by a hundred, a thousand, or a million. So 571 is written as five hundred [and] seventy-one.
Oh, and the only Pokemon card I own now is a holographic Blastoise. I bought it at $20, and fifteen years later, it’s worth a whopping $9.99!