12125636 has 12 divisors (see below), whose sum is σ = 21476112. Its totient is φ = 5989608.

The previous prime is 12125609. The next prime is 12125647. The reversal of 12125636 is 63652121.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17930 + ... + 18593.

It is an arithmetic number, because the mean of its divisors is an integer number (1789676).

Almost surely, 2^12125636 is an apocalyptic number.

It is an amenable number.

12125636 is a deficient number, since it is larger than the sum of its proper divisors (9350476).

12125636 is a wasteful number, since it uses less digits than its factorization.

12125636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36610 (or 36608 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 12125636 is about 3482.1883923763. The cubic root of 12125636 is about 229.7390613508.

Adding to 12125636 its reverse (63652121), we get a palindrome (75777757).

The spelling of 12125636 in words is "twelve million, one hundred twenty-five thousand, six hundred thirty-six".