31265125 has 16 divisors (see below), whose sum is σ = 41316912. Its totient is φ = 23539200.

The previous prime is 31265107. The next prime is 31265147. The reversal of 31265125 is 52156213.

It can be written as a sum of positive squares in 8 ways, for example, as 3323329 + 27941796 = 1823^2 + 5286^2 .

It is not a de Polignac number, because 31265125 - 2⁵ = 31265093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31265125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5232 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (2582307).

Almost surely, 2^31265125 is an apocalyptic number.

It is an amenable number.

31265125 is a deficient number, since it is larger than the sum of its proper divisors (10051787).

31265125 is a wasteful number, since it uses less digits than its factorization.

31265125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14745 (or 14735 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 31265125 is about 5591.5226012241. The cubic root of 31265125 is about 315.0310710932.

The spelling of 31265125 in words is "thirty-one million, two hundred sixty-five thousand, one hundred twenty-five".