12908725 has 6 divisors (see below), whose sum is σ = 16006850. Its totient is φ = 10326960.

The previous prime is 12908713. The next prime is 12908737. The reversal of 12908725 is 52780921.

It is an interprime number because it is at equal distance from previous prime (12908713) and next prime (12908737).

It can be written as a sum of positive squares in 3 ways, for example, as 1739761 + 11168964 = 1319^2 + 3342^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12908725 is a prime.

It is a super-2 number, since 2×12908725² = 333270362251250, which contains 22 as substring.

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, 258150 + ... + 258199.

Almost surely, 2^12908725 is an apocalyptic number.

It is an amenable number.

12908725 is a deficient number, since it is larger than the sum of its proper divisors (3098125).

12908725 is an equidigital number, since it uses as much as digits as its factorization.

12908725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516359 (or 516354 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 12908725 is about 3592.8714143426. The cubic root of 12908725 is about 234.5818730518.

The spelling of 12908725 in words is "twelve million, nine hundred eight thousand, seven hundred twenty-five".