631630975525 has 12 divisors (see below), whose sum is σ = 854424447264. Its totient is φ = 459367982000.

The previous prime is 631630975519. The next prime is 631630975553. The reversal of 631630975525 is 525579036136.

It is not a de Polignac number, because 631630975525 - 2³⁹ = 81875161637 is a prime.

It is a Duffinian 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, 1148419681 + ... + 1148420230.

It is an arithmetic number, because the mean of its divisors is an integer number (71202037272).

Almost surely, 2^631630975525 is an apocalyptic number.

It is an amenable number.

631630975525 is a deficient number, since it is larger than the sum of its proper divisors (222793471739).

631630975525 is a wasteful number, since it uses less digits than its factorization.

631630975525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296839932 (or 2296839927 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 52.

The spelling of 631630975525 in words is "six hundred thirty-one billion, six hundred thirty million, nine hundred seventy-five thousand, five hundred twenty-five".