1251313415504 has 40 divisors (see below), whose sum is σ = 2554633487040. Its totient is φ = 592120585728.

The previous prime is 1251313415431. The next prime is 1251313415509. The reversal of 1251313415504 is 4055143131521.

It is a happy number.

It is a super-2 number, since 2×1251313415504² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251313415509) 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, 1809524 + ... + 2403539.

It is an arithmetic number, because the mean of its divisors is an integer number (63865837176).

Almost surely, 2^{1251313415504} is an apocalyptic number.

It is an amenable number.

1251313415504 is an abundant number, since it is smaller than the sum of its proper divisors (1303320071536).

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

1251313415504 is a wasteful number, since it uses less digits than its factorization.

1251313415504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214067 (or 4214061 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 1251313415504 in words is "one trillion, two hundred fifty-one billion, three hundred thirteen million, four hundred fifteen thousand, five hundred four".