251125493393 has 4 divisors (see below), whose sum is σ = 251463482688. Its totient is φ = 250787504100.

The previous prime is 251125493383. The next prime is 251125493459. The reversal of 251125493393 is 393394521152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 251125493393 - 2⁶ = 251125493329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251125493363) 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, 168993533 + ... + 168995018.

It is an arithmetic number, because the mean of its divisors is an integer number (62865870672).

Almost surely, 2^251125493393 is an apocalyptic number.

It is an amenable number.

251125493393 is a deficient number, since it is larger than the sum of its proper divisors (337989295).

251125493393 is an equidigital number, since it uses as much as digits as its factorization.

251125493393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337989294.

The product of its digits is 874800, while the sum is 47.

The spelling of 251125493393 in words is "two hundred fifty-one billion, one hundred twenty-five million, four hundred ninety-three thousand, three hundred ninety-three".