3931643104825 has 12 divisors (see below), whose sum is σ = 4877929520208. Its totient is φ = 3143577664400.

The previous prime is 3931643104819. The next prime is 3931643104841. The reversal of 3931643104825 is 5284013461393.

It is not a de Polignac number, because 3931643104825 - 2⁵ = 3931643104793 is a prime.

It is a Duffinian 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, 43374307 + ... + 43464856.

It is an arithmetic number, because the mean of its divisors is an integer number (406494126684).

Almost surely, 2^{3931643104825} is an apocalyptic number.

It is an amenable number.

3931643104825 is a deficient number, since it is larger than the sum of its proper divisors (946286415383).

3931643104825 is a wasteful number, since it uses less digits than its factorization.

3931643104825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86840984 (or 86840979 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 3931643104825 in words is "three trillion, nine hundred thirty-one billion, six hundred forty-three million, one hundred four thousand, eight hundred twenty-five".