It is an unprimeable number.
Almost surely, 26499925250 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6499925250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10073935872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6499925250 is a wasteful number, since it uses less digits than its factorization.
6499925250 is an evil number, because the sum of its binary digits is even.
The square root of 6499925250 is about 80622.1139018322. The cubic root of 6499925250 is about 1866.2484244015.
The spelling of 6499925250 in words is "six billion, four hundred ninety-nine million, nine hundred twenty-five thousand, two hundred fifty".