12256561274 has 16 divisors (see below), whose sum is σ = 18768593376. Its totient is φ = 6001249200.

The previous prime is 12256561271. The next prime is 12256561283. The reversal of 12256561274 is 47216565221.

It is not an unprimeable number, because it can be changed into a prime (12256561271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193592 + ... + 248979.

It is an arithmetic number, because the mean of its divisors is an integer number (1173037086).

Almost surely, 2^12256561274 is an apocalyptic number.

12256561274 is a deficient number, since it is larger than the sum of its proper divisors (6512032102).

12256561274 is a wasteful number, since it uses less digits than its factorization.

12256561274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442861.

The product of its digits is 201600, while the sum is 41.

The spelling of 12256561274 in words is "twelve billion, two hundred fifty-six million, five hundred sixty-one thousand, two hundred seventy-four".