12555156 has 12 divisors (see below), whose sum is σ = 29295392. Its totient is φ = 4185048.

The previous prime is 12555149. The next prime is 12555199. The reversal of 12555156 is 65155521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 523120 + ... + 523143.

Almost surely, 2^12555156 is an apocalyptic number.

It is an amenable number.

12555156 is an abundant number, since it is smaller than the sum of its proper divisors (16740236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12555156 is a wasteful number, since it uses less digits than its factorization.

12555156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046270 (or 1046268 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 12555156 is about 3543.3255565923. The cubic root of 12555156 is about 232.4202894747.

It can be divided in two parts, 1255515 and 6, that added together give a palindrome (1255521).

The spelling of 12555156 in words is "twelve million, five hundred fifty-five thousand, one hundred fifty-six".