12256915 has 16 divisors (see below), whose sum is σ = 16990560. Its totient is φ = 8389120.

The previous prime is 12256903. The next prime is 12256927. The reversal of 12256915 is 51965221.

12256915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12256903) and next prime (12256927).

It is not a de Polignac number, because 12256915 - 2⁵ = 12256883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5620 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (1061910).

Almost surely, 2^12256915 is an apocalyptic number.

12256915 is a deficient number, since it is larger than the sum of its proper divisors (4733645).

12256915 is a wasteful number, since it uses less digits than its factorization.

12256915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13142.

The product of its digits is 5400, while the sum is 31.

The square root of 12256915 is about 3500.9877177734. The cubic root of 12256915 is about 230.5651821811.

The spelling of 12256915 in words is "twelve million, two hundred fifty-six thousand, nine hundred fifteen".