6446916925 has 12 divisors (see below), whose sum is σ = 7996988160. Its totient is φ = 5155719920.

The previous prime is 6446916913. The next prime is 6446916977. The reversal of 6446916925 is 5296196446.

It is not a de Polignac number, because 6446916925 - 2⁵ = 6446916893 is a prime.

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, 29604 + ... + 117346.

It is an arithmetic number, because the mean of its divisors is an integer number (666415680).

Almost surely, 2^6446916925 is an apocalyptic number.

It is an amenable number.

6446916925 is a deficient number, since it is larger than the sum of its proper divisors (1550071235).

6446916925 is a wasteful number, since it uses less digits than its factorization.

6446916925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90692 (or 90687 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The square root of 6446916925 is about 80292.6953402363. The cubic root of 6446916925 is about 1861.1613478944.

The spelling of 6446916925 in words is "six billion, four hundred forty-six million, nine hundred sixteen thousand, nine hundred twenty-five".