12565312 has 28 divisors (see below), whose sum is σ = 26403300. Its totient is φ = 5912576.

The previous prime is 12565307. The next prime is 12565339. The reversal of 12565312 is 21356521.

It can be written as a sum of positive squares in 2 ways, for example, as 11182336 + 1382976 = 3344^2 + 1176^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4687 + ... + 6862.

It is an arithmetic number, because the mean of its divisors is an integer number (942975).

Almost surely, 2^12565312 is an apocalyptic number.

It is an amenable number.

12565312 is an abundant number, since it is smaller than the sum of its proper divisors (13837988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12565312 is a wasteful number, since it uses less digits than its factorization.

12565312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578 (or 11568 counting only the distinct ones).

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

The square root of 12565312 is about 3544.7583838677. The cubic root of 12565312 is about 232.4829416706.

The spelling of 12565312 in words is "twelve million, five hundred sixty-five thousand, three hundred twelve".