31264625 has 16 divisors (see below), whose sum is σ = 44593536. Its totient is φ = 21438000.

The previous prime is 31264619. The next prime is 31264627. The reversal of 31264625 is 52646213.

It is not a de Polignac number, because 31264625 - 2⁶ = 31264561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31264627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16991 + ... + 18740.

It is an arithmetic number, because the mean of its divisors is an integer number (2787096).

Almost surely, 2^31264625 is an apocalyptic number.

31264625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31264625 is a deficient number, since it is larger than the sum of its proper divisors (13328911).

31264625 is an equidigital number, since it uses as much as digits as its factorization.

31264625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35753 (or 35743 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 31264625 is about 5591.4778905044. The cubic root of 31264625 is about 315.0293917313.

The spelling of 31264625 in words is "thirty-one million, two hundred sixty-four thousand, six hundred twenty-five".