6449635925 has 12 divisors (see below), whose sum is σ = 7998925536. Its totient is φ = 5158820400.

The previous prime is 6449635859. The next prime is 6449635987. The reversal of 6449635925 is 5295369446.

It is a happy number.

It is not a de Polignac number, because 6449635925 - 2¹² = 6449631829 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153002 + ... + 190548.

It is an arithmetic number, because the mean of its divisors is an integer number (666577128).

Almost surely, 2^6449635925 is an apocalyptic number.

It is an amenable number.

6449635925 is a deficient number, since it is larger than the sum of its proper divisors (1549289611).

6449635925 is a wasteful number, since it uses less digits than its factorization.

6449635925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44428 (or 44423 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 53.

The square root of 6449635925 is about 80309.6253571140. The cubic root of 6449635925 is about 1861.4229606159.

The spelling of 6449635925 in words is "six billion, four hundred forty-nine million, six hundred thirty-five thousand, nine hundred twenty-five".