12585913 has 8 divisors (see below), whose sum is σ = 13151880. Its totient is φ = 12028800.

The previous prime is 12585889. The next prime is 12585931. The reversal of 12585913 is 31958521.

It can be written as a sum of positive squares in 4 ways, for example, as 5419584 + 7166329 = 2328^2 + 2677^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12585913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12585973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (1643985).

Almost surely, 2^12585913 is an apocalyptic number.

It is an amenable number.

12585913 is a deficient number, since it is larger than the sum of its proper divisors (565967).

12585913 is a wasteful number, since it uses less digits than its factorization.

12585913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427.

The product of its digits is 10800, while the sum is 34.

The square root of 12585913 is about 3547.6630336040. The cubic root of 12585913 is about 232.6099252808.

It can be divided in two parts, 1258591 and 3, that multiplied together give a palindrome (3775773).

The spelling of 12585913 in words is "twelve million, five hundred eighty-five thousand, nine hundred thirteen".