391652890025 has 12 divisors (see below), whose sum is σ = 488090040000. Its totient is φ = 311747824080.

The previous prime is 391652890021. The next prime is 391652890037. The reversal of 391652890025 is 520098256193.

It is not a de Polignac number, because 391652890025 - 2² = 391652890021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (391652890021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39357125 + ... + 39367074.

It is an arithmetic number, because the mean of its divisors is an integer number (40674170000).

Almost surely, 2^391652890025 is an apocalyptic number.

It is an amenable number.

391652890025 is a deficient number, since it is larger than the sum of its proper divisors (96437149975).

391652890025 is a wasteful number, since it uses less digits than its factorization.

391652890025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78724408 (or 78724403 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 391652890025 in words is "three hundred ninety-one billion, six hundred fifty-two million, eight hundred ninety thousand, twenty-five".