12255616 has 16 divisors (see below), whose sum is σ = 24415740. Its totient is φ = 6127744.

The previous prime is 12255599. The next prime is 12255631. The reversal of 12255616 is 61655221.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47746 + ... + 48001.

Almost surely, 2^12255616 is an apocalyptic number.

12255616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12255616 is a deficient number, since it is larger than the sum of its proper divisors (12160124).

12255616 is an frugal number, since it uses more digits than its factorization.

12255616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95761 (or 95749 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 12255616 is about 3500.8021937836. The cubic root of 12255616 is about 230.5570367178.

The spelling of 12255616 in words is "twelve million, two hundred fifty-five thousand, six hundred sixteen".