12912255 has 24 divisors (see below), whose sum is σ = 22905168. Its totient is φ = 6725376.

The previous prime is 12912241. The next prime is 12912257. The reversal of 12912255 is 55221921.

12912255 = 1605² + 1606² + ... + 1609².

It is not a de Polignac number, because 12912255 - 2⁸ = 12911999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12912257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1402 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (954382).

Almost surely, 2^12912255 is an apocalyptic number.

12912255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12912255 is a deficient number, since it is larger than the sum of its proper divisors (9992913).

12912255 is a wasteful number, since it uses less digits than its factorization.

12912255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6727 (or 6724 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 12912255 is about 3593.3626312968. The cubic root of 12912255 is about 234.6032539018.

The spelling of 12912255 in words is "twelve million, nine hundred twelve thousand, two hundred fifty-five".