31280560625 has 20 divisors (see below), whose sum is σ = 40787693760. Its totient is φ = 23936418000.

The previous prime is 31280560603. The next prime is 31280560627. The reversal of 31280560625 is 52606508213.

It is not a de Polignac number, because 31280560625 - 2⁶ = 31280560561 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31280560627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1073645 + ... + 1102394.

It is an arithmetic number, because the mean of its divisors is an integer number (2039384688).

Almost surely, 2^31280560625 is an apocalyptic number.

It is an amenable number.

31280560625 is a deficient number, since it is larger than the sum of its proper divisors (9507133135).

31280560625 is an equidigital number, since it uses as much as digits as its factorization.

31280560625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176082 (or 2176067 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 31280560625 in words is "thirty-one billion, two hundred eighty million, five hundred sixty thousand, six hundred twenty-five".