Earlier quoted context omitted.
They mean USD $25,000 and not $25.
Much of the world uses . for a number separator. https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/ind...
Thin space (U+2009) is also how you are supposed to do it when using the SI unit system, according to the SI spec. For the decimal separator, the SI standard is to use which of '.' or ',' is customary.