12136525 has 12 divisors (see below), whose sum is σ = 15704352. Its totient is φ = 9286640.

The previous prime is 12136517. The next prime is 12136547. The reversal of 12136525 is 52563121.

It is not a de Polignac number, because 12136525 - 2³ = 12136517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12136525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9979 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (1308696).

Almost surely, 2^12136525 is an apocalyptic number.

It is an amenable number.

12136525 is a deficient number, since it is larger than the sum of its proper divisors (3567827).

12136525 is a wasteful number, since it uses less digits than its factorization.

12136525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21140 (or 21135 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 12136525 is about 3483.7515697879. The cubic root of 12136525 is about 229.8078104644.

Adding to 12136525 its reverse (52563121), we get a palindrome (64699646).

The spelling of 12136525 in words is "twelve million, one hundred thirty-six thousand, five hundred twenty-five".