251265263875 has 16 divisors (see below), whose sum is σ = 313593370272. Its totient is φ = 201003031200.

The previous prime is 251265263857. The next prime is 251265263881. The reversal of 251265263875 is 578362562152.

It is not a de Polignac number, because 251265263875 - 2⁹ = 251265263363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4480509 + ... + 4536241.

It is an arithmetic number, because the mean of its divisors is an integer number (19599585642).

Almost surely, 2^251265263875 is an apocalyptic number.

251265263875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

251265263875 is a deficient number, since it is larger than the sum of its proper divisors (62328106397).

251265263875 is an equidigital number, since it uses as much as digits as its factorization.

251265263875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91815 (or 91805 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 52.

The spelling of 251265263875 in words is "two hundred fifty-one billion, two hundred sixty-five million, two hundred sixty-three thousand, eight hundred seventy-five".