31025125 has 8 divisors (see below), whose sum is σ = 38719512. Its totient is φ = 24820000.

The previous prime is 31025063. The next prime is 31025143. The reversal of 31025125 is 52152013.

It can be written as a sum of positive squares in 4 ways, for example, as 2477476 + 28547649 = 1574^2 + 5343^2 .

It is not a de Polignac number, because 31025125 - 2²¹ = 28927973 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 123976 + ... + 124225.

It is an arithmetic number, because the mean of its divisors is an integer number (4839939).

Almost surely, 2^31025125 is an apocalyptic number.

It is an amenable number.

31025125 is a deficient number, since it is larger than the sum of its proper divisors (7694387).

31025125 is an equidigital number, since it uses as much as digits as its factorization.

31025125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248216 (or 248206 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 31025125 is about 5570.0201974499. The cubic root of 31025125 is about 314.2229102665. Note that the first 3 decimals are identical.

Adding to 31025125 its reverse (52152013), we get a palindrome (83177138).

The spelling of 31025125 in words is "thirty-one million, twenty-five thousand, one hundred twenty-five".