12931025 has 6 divisors (see below), whose sum is σ = 16034502. Its totient is φ = 10344800.

The previous prime is 12931007. The next prime is 12931043. The reversal of 12931025 is 52013921.

It is an interprime number because it is at equal distance from previous prime (12931007) and next prime (12931043).

It can be written as a sum of positive squares in 3 ways, for example, as 28561 + 12902464 = 169^2 + 3592^2 .

It is not a de Polignac number, because 12931025 - 2¹² = 12926929 is a prime.

It is a super-2 number, since 2×12931025² = 334422815101250, which contains 22 as substring.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 258596 + ... + 258645.

It is an arithmetic number, because the mean of its divisors is an integer number (2672417).

Almost surely, 2^12931025 is an apocalyptic number.

It is an amenable number.

12931025 is a deficient number, since it is larger than the sum of its proper divisors (3103477).

12931025 is an equidigital number, since it uses as much as digits as its factorization.

12931025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517251 (or 517246 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12931025 is about 3595.9734426161. The cubic root of 12931025 is about 234.7168764790.

Adding to 12931025 its reverse (52013921), we get a palindrome (64944946).

The spelling of 12931025 in words is "twelve million, nine hundred thirty-one thousand, twenty-five".