251433145255 has 32 divisors (see below), whose sum is σ = 325011667968. Its totient is φ = 186046425600.

The previous prime is 251433145231. The next prime is 251433145261. The reversal of 251433145255 is 552541334152.

It is not a de Polignac number, because 251433145255 - 2¹¹ = 251433143207 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 1809904 + ... + 1943866.

It is an arithmetic number, because the mean of its divisors is an integer number (10156614624).

Almost surely, 2^251433145255 is an apocalyptic number.

251433145255 is a deficient number, since it is larger than the sum of its proper divisors (73578522713).

251433145255 is a wasteful number, since it uses less digits than its factorization.

251433145255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134367.

The product of its digits is 360000, while the sum is 40.

The spelling of 251433145255 in words is "two hundred fifty-one billion, four hundred thirty-three million, one hundred forty-five thousand, two hundred fifty-five".