12565131 has 8 divisors (see below), whose sum is σ = 16828224. Its totient is φ = 8339400.

The previous prime is 12565129. The next prime is 12565139. The reversal of 12565131 is 13156521.

12565131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12565131 - 2¹ = 12565129 is a prime.

It is a super-2 number, since 2×12565131² = 315765034094322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12565139) 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, 8545 + ... + 9906.

It is an arithmetic number, because the mean of its divisors is an integer number (2103528).

Almost surely, 2^12565131 is an apocalyptic number.

12565131 is a deficient number, since it is larger than the sum of its proper divisors (4263093).

12565131 is a wasteful number, since it uses less digits than its factorization.

12565131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18681.

The product of its digits is 900, while the sum is 24.

The square root of 12565131 is about 3544.7328531217. The cubic root of 12565131 is about 232.4818253801.

It can be divided in two parts, 125 and 65131, that added together give a palindrome (65256).

The spelling of 12565131 in words is "twelve million, five hundred sixty-five thousand, one hundred thirty-one".