12256512 has 36 divisors (see below), whose sum is σ = 32622240. Its totient is φ = 4085248.

The previous prime is 12256487. The next prime is 12256549. The reversal of 12256512 is 21565221.

It is a happy number.

It is a super-2 number, since 2×12256512² = 300444172812288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 7212 + ... + 8747.

Almost surely, 2^12256512 is an apocalyptic number.

12256512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12256512 is an abundant number, since it is smaller than the sum of its proper divisors (20365728).

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

12256512 is an equidigital number, since it uses as much as digits as its factorization.

12256512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15978 (or 15964 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 12256512 is about 3500.9301621141. The cubic root of 12256512 is about 230.5626552052.

The spelling of 12256512 in words is "twelve million, two hundred fifty-six thousand, five hundred twelve".