12503956 has 6 divisors (see below), whose sum is σ = 21881930. Its totient is φ = 6251976.

The previous prime is 12503941. The next prime is 12503971. The reversal of 12503956 is 65930521.

It is an interprime number because it is at equal distance from previous prime (12503941) and next prime (12503971).

It can be written as a sum of positive squares in only one way, i.e., 9511056 + 2992900 = 3084^2 + 1730^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562991 + ... + 1562998.

Almost surely, 2^12503956 is an apocalyptic number.

It is an amenable number.

12503956 is a deficient number, since it is larger than the sum of its proper divisors (9377974).

12503956 is a wasteful number, since it uses less digits than its factorization.

12503956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125993 (or 3125991 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 12503956 is about 3536.0933245603. The cubic root of 12503956 is about 232.1039219322.

The spelling of 12503956 in words is "twelve million, five hundred three thousand, nine hundred fifty-six".