1251453904 has 20 divisors (see below), whose sum is σ = 2425665060. Its totient is φ = 625475840.

The previous prime is 1251453901. The next prime is 1251453919. The reversal of 1251453904 is 4093541521.

It can be written as a sum of positive squares in 2 ways, for example, as 1221642304 + 29811600 = 34952^2 + 5460^2 .

It is a super-2 number, since 2×1251453904² = 3132273747673682432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1251453904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251453901) 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, 29334 + ... + 57994.

It is an arithmetic number, because the mean of its divisors is an integer number (121283253).

Almost surely, 2^1251453904 is an apocalyptic number.

It is an amenable number.

1251453904 is a deficient number, since it is larger than the sum of its proper divisors (1174211156).

1251453904 is a wasteful number, since it uses less digits than its factorization.

1251453904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31398 (or 31392 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1251453904 is about 35375.8943915203. The cubic root of 1251453904 is about 1077.6348286912.

The spelling of 1251453904 in words is "one billion, two hundred fifty-one million, four hundred fifty-three thousand, nine hundred four".