252505891 has 16 divisors (see below), whose sum is σ = 291506688. Its totient is φ = 216462400.

The previous prime is 252505867. The next prime is 252505931. The reversal of 252505891 is 198505252.

It is not a de Polignac number, because 252505891 - 2⁵ = 252505859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252505891.

It is not an unprimeable number, because it can be changed into a prime (252505391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10935 + ... + 24991.

It is an arithmetic number, because the mean of its divisors is an integer number (18219168).

Almost surely, 2^252505891 is an apocalyptic number.

252505891 is a deficient number, since it is larger than the sum of its proper divisors (39000797).

252505891 is a wasteful number, since it uses less digits than its factorization.

252505891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14162.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 252505891 is about 15890.4339462458. The cubic root of 252505891 is about 632.0583478083.

The spelling of 252505891 in words is "two hundred fifty-two million, five hundred five thousand, eight hundred ninety-one".