12256256 has 22 divisors (see below), whose sum is σ = 24502590. Its totient is φ = 6127616.

The previous prime is 12256207. The next prime is 12256271. The reversal of 12256256 is 65265221.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 4326400 = 2816^2 + 2080^2 .

It is a super-2 number, since 2×12256256² = 300431622275072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4961 + ... + 7008.

Almost surely, 2^12256256 is an apocalyptic number.

12256256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12256256 is a deficient number, since it is larger than the sum of its proper divisors (12246334).

12256256 is an equidigital number, since it uses as much as digits as its factorization.

12256256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989 (or 11971 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 12256256 is about 3500.8936002112. The cubic root of 12256256 is about 230.5610499510.

The spelling of 12256256 in words is "twelve million, two hundred fifty-six thousand, two hundred fifty-six".