252528975450 has 72 divisors (see below), whose sum is σ = 691262400348. Its totient is φ = 66070467840.

The previous prime is 252528975437. The next prime is 252528975451. The reversal of 252528975450 is 54579825252.

252528975450 is a `hidden beast` number, since 2 + 5 + 2 + 5 + 2 + 8 + 97 + 545 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 84885405201 + 167643570249 = 291351^2 + 409443^2 .

It is not an unprimeable number, because it can be changed into a prime (252528975451) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 5270259 + ... + 5317958.

Almost surely, 2^252528975450 is an apocalyptic number.

252528975450 is an abundant number, since it is smaller than the sum of its proper divisors (438733424898).

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

252528975450 is a wasteful number, since it uses less digits than its factorization.

252528975450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588288 (or 10588280 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 252528975450 in words is "two hundred fifty-two billion, five hundred twenty-eight million, nine hundred seventy-five thousand, four hundred fifty".