253531265 has 24 divisors (see below), whose sum is σ = 331789248. Its totient is φ = 185889600.

The previous prime is 253531259. The next prime is 253531297. The reversal of 253531265 is 562135352.

It is a de Polignac number, because none of the positive numbers 2^k-253531265 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126602 + ... + 128588.

It is an arithmetic number, because the mean of its divisors is an integer number (13824552).

Almost surely, 2^253531265 is an apocalyptic number.

It is an amenable number.

253531265 is a deficient number, since it is larger than the sum of its proper divisors (78257983).

253531265 is a wasteful number, since it uses less digits than its factorization.

253531265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2156 counting only the distinct ones).

The product of its digits is 27000, while the sum is 32.

The square root of 253531265 is about 15922.6651349578. The cubic root of 253531265 is about 632.9127449158.

The spelling of 253531265 in words is "two hundred fifty-three million, five hundred thirty-one thousand, two hundred sixty-five".