12251563056 has 120 divisors (see below), whose sum is σ = 35160698976. Its totient is φ = 3981035520.

The previous prime is 12251563007. The next prime is 12251563057. The reversal of 12251563056 is 65036515221.

12251563056 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 15 + 630 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12251563056.

It is not an unprimeable number, because it can be changed into a prime (12251563057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 986421 + ... + 998763.

Almost surely, 2^12251563056 is an apocalyptic number.

12251563056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12251563056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17580349488).

12251563056 is an abundant number, since it is smaller than the sum of its proper divisors (22909135920).

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

12251563056 is a wasteful number, since it uses less digits than its factorization.

12251563056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531 (or 12522 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 12251563056 in words is "twelve billion, two hundred fifty-one million, five hundred sixty-three thousand, fifty-six".