1251375853 has 64 divisors (see below), whose sum is σ = 1721466880. Its totient is φ = 881798400.

The previous prime is 1251375847. The next prime is 1251375859. The reversal of 1251375853 is 3585731521.

It is an interprime number because it is at equal distance from previous prime (1251375847) and next prime (1251375859).

It is not a de Polignac number, because 1251375853 - 2⁹ = 1251375341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251375859) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1982848 + ... + 1983478.

It is an arithmetic number, because the mean of its divisors is an integer number (26897920).

Almost surely, 2^1251375853 is an apocalyptic number.

1251375853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1251375853 is a deficient number, since it is larger than the sum of its proper divisors (470091027).

1251375853 is a wasteful number, since it uses less digits than its factorization.

1251375853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its digits is 126000, while the sum is 40.

The square root of 1251375853 is about 35374.7912078644. The cubic root of 1251375853 is about 1077.6124248231.

The spelling of 1251375853 in words is "one billion, two hundred fifty-one million, three hundred seventy-five thousand, eight hundred fifty-three".