251252701055 has 8 divisors (see below), whose sum is σ = 301512591744. Its totient is φ = 200995927200.

The previous prime is 251252701001. The next prime is 251252701061. The reversal of 251252701055 is 550107252152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 251252701055 - 2⁸ = 251252700799 is a prime.

It is a super-2 number, since 2×251252701055² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598031 + ... + 927440.

It is an arithmetic number, because the mean of its divisors is an integer number (37689073968).

Almost surely, 2^251252701055 is an apocalyptic number.

251252701055 is a deficient number, since it is larger than the sum of its proper divisors (50259890689).

251252701055 is a wasteful number, since it uses less digits than its factorization.

251252701055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558417.

The product of its (nonzero) digits is 35000, while the sum is 35.

The spelling of 251252701055 in words is "two hundred fifty-one billion, two hundred fifty-two million, seven hundred one thousand, fifty-five".