251225035452 has 36 divisors (see below), whose sum is σ = 635189514960. Its totient is φ = 83722102272.

The previous prime is 251225035441. The next prime is 251225035483. The reversal of 251225035452 is 254530522152.

251225035452 is a `hidden beast` number, since 2 + 5 + 1 + 2 + 250 + 354 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×251225035452² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659128 + ... + 967935.

Almost surely, 2^251225035452 is an apocalyptic number.

It is an amenable number.

251225035452 is an abundant number, since it is smaller than the sum of its proper divisors (383964479508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251225035452 is a wasteful number, since it uses less digits than its factorization.

251225035452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631362 (or 1631357 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 251225035452 in words is "two hundred fifty-one billion, two hundred twenty-five million, thirty-five thousand, four hundred fifty-two".