31248625 has 8 divisors (see below), whose sum is σ = 38998440. Its totient is φ = 24998800.

The previous prime is 31248617. The next prime is 31248643. The reversal of 31248625 is 52684213.

It can be written as a sum of positive squares in 4 ways, for example, as 3549456 + 27699169 = 1884^2 + 5263^2 .

It is not a de Polignac number, because 31248625 - 2³ = 31248617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124870 + ... + 125119.

It is an arithmetic number, because the mean of its divisors is an integer number (4874805).

Almost surely, 2^31248625 is an apocalyptic number.

It is an amenable number.

31248625 is a deficient number, since it is larger than the sum of its proper divisors (7749815).

31248625 is an equidigital number, since it uses as much as digits as its factorization.

31248625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250004 (or 249994 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 31248625 is about 5590.0469586579. The cubic root of 31248625 is about 314.9756426954.

The spelling of 31248625 in words is "thirty-one million, two hundred forty-eight thousand, six hundred twenty-five".