12565412 has 12 divisors (see below), whose sum is σ = 22017996. Its totient is φ = 6274560.

The previous prime is 12565409. The next prime is 12565433. The reversal of 12565412 is 21456521.

It can be written as a sum of positive squares in 2 ways, for example, as 12222016 + 343396 = 3496^2 + 586^2 .

It is an alternating number because its digits alternate between odd and even.

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, 2612 + ... + 5652.

It is an arithmetic number, because the mean of its divisors is an integer number (1834833).

Almost surely, 2^12565412 is an apocalyptic number.

It is an amenable number.

12565412 is a deficient number, since it is larger than the sum of its proper divisors (9452584).

12565412 is a wasteful number, since it uses less digits than its factorization.

12565412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078 (or 4076 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 12565412 is about 3544.7724891733. The cubic root of 12565412 is about 232.4835584011.

The spelling of 12565412 in words is "twelve million, five hundred sixty-five thousand, four hundred twelve".