12565089 has 24 divisors (see below), whose sum is σ = 18880680. Its totient is φ = 8045568.

The previous prime is 12565079. The next prime is 12565093. The reversal of 12565089 is 98056521.

It is a happy number.

12565089 is a `hidden beast` number, since 12 + 565 + 0 + 89 = 666.

12565089 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2433600 + 10131489 = 1560^2 + 3183^2 .

It is not a de Polignac number, because 12565089 - 2⁷ = 12564961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12565009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32107 + ... + 32495.

It is an arithmetic number, because the mean of its divisors is an integer number (786695).

Almost surely, 2^12565089 is an apocalyptic number.

It is an amenable number.

12565089 is a deficient number, since it is larger than the sum of its proper divisors (6315591).

12565089 is a wasteful number, since it uses less digits than its factorization.

12565089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 12565089 is about 3544.7269288339. The cubic root of 12565089 is about 232.4815663498.

The spelling of 12565089 in words is "twelve million, five hundred sixty-five thousand, eighty-nine".