6499925250 has 256 divisors, whose sum is σ = 20147871744. Its totient is φ = 1359072000.

The previous prime is 6499925233. The next prime is 6499925269. The reversal of 6499925250 is 525299946.

It is a junction number, because it is equal to n+sod(n) for n = 6499925193 and 6499925202.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8940387 + ... + 8941113.

It is an arithmetic number, because the mean of its divisors is an integer number (78702624).

Almost surely, 2^6499925250 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).

6499925250 is an abundant number, since it is smaller than the sum of its proper divisors (13647946494).

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 sum of its prime factors is 898 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 51.

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".