631087925 has 24 divisors (see below), whose sum is σ = 869944320. Its totient is φ = 450993600.

The previous prime is 631087913. The next prime is 631087931. The reversal of 631087925 is 529780136.

It is not a de Polignac number, because 631087925 - 2⁸ = 631087669 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21245 + ... + 41394.

It is an arithmetic number, because the mean of its divisors is an integer number (36247680).

Almost surely, 2^631087925 is an apocalyptic number.

631087925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

631087925 is a deficient number, since it is larger than the sum of its proper divisors (238856395).

631087925 is a wasteful number, since it uses less digits than its factorization.

631087925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62693 (or 62688 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 631087925 is about 25121.4634326904. The cubic root of 631087925 is about 857.7550629976.

The spelling of 631087925 in words is "six hundred thirty-one million, eighty-seven thousand, nine hundred twenty-five".