12565945 has 8 divisors (see below), whose sum is σ = 17233344. Its totient is φ = 8616624.

The previous prime is 12565937. The next prime is 12565991. The reversal of 12565945 is 54956521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12565945 - 2³ = 12565937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179479 + ... + 179548.

It is an arithmetic number, because the mean of its divisors is an integer number (2154168).

Almost surely, 2^12565945 is an apocalyptic number.

It is an amenable number.

12565945 is a deficient number, since it is larger than the sum of its proper divisors (4667399).

12565945 is an equidigital number, since it uses as much as digits as its factorization.

12565945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359039.

The product of its digits is 54000, while the sum is 37.

The square root of 12565945 is about 3544.8476695057. The cubic root of 12565945 is about 232.4868455193.

The spelling of 12565945 in words is "twelve million, five hundred sixty-five thousand, nine hundred forty-five".