631438262625 has 16 divisors (see below), whose sum is σ = 1050713269632. Its totient is φ = 336767073200.

The previous prime is 631438262591. The next prime is 631438262639. The reversal of 631438262625 is 526262834136.

It is not a de Polignac number, because 631438262625 - 2⁹ = 631438262113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841917309 + ... + 841918058.

It is an arithmetic number, because the mean of its divisors is an integer number (65669579352).

Almost surely, 2^631438262625 is an apocalyptic number.

It is an amenable number.

631438262625 is a deficient number, since it is larger than the sum of its proper divisors (419275007007).

631438262625 is a wasteful number, since it uses less digits than its factorization.

631438262625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683835385 (or 1683835375 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 48.

The spelling of 631438262625 in words is "six hundred thirty-one billion, four hundred thirty-eight million, two hundred sixty-two thousand, six hundred twenty-five".