12251864457 has 96 divisors (see below), whose sum is σ = 21686945280. Its totient is φ = 6514421760.

The previous prime is 12251864431. The next prime is 12251864507. The reversal of 12251864457 is 75446815221.

12251864457 is a `hidden beast` number, since 1 + 2 + 25 + 186 + 445 + 7 = 666.

It is not a de Polignac number, because 12251864457 - 2⁷ = 12251864329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12251864357) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8573019 + ... + 8574447.

It is an arithmetic number, because the mean of its divisors is an integer number (225905680).

Almost surely, 2^12251864457 is an apocalyptic number.

It is an amenable number.

12251864457 is a deficient number, since it is larger than the sum of its proper divisors (9435080823).

12251864457 is a wasteful number, since it uses less digits than its factorization.

12251864457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1620 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The spelling of 12251864457 in words is "twelve billion, two hundred fifty-one million, eight hundred sixty-four thousand, four hundred fifty-seven".