1251255504 has 20 divisors (see below), whose sum is σ = 3232410176. Its totient is φ = 417085152.

The previous prime is 1251255503. The next prime is 1251255521. The reversal of 1251255504 is 4055521521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251255503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13033864 + ... + 13033959.

Almost surely, 2^1251255504 is an apocalyptic number.

It is an amenable number.

1251255504 is an abundant number, since it is smaller than the sum of its proper divisors (1981154672).

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

1251255504 is a wasteful number, since it uses less digits than its factorization.

1251255504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26067834 (or 26067828 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1251255504 is about 35373.0901109869. The cubic root of 1251255504 is about 1077.5778778522.

The spelling of 1251255504 in words is "one billion, two hundred fifty-one million, two hundred fifty-five thousand, five hundred four".