252521253 has 8 divisors (see below), whose sum is σ = 374105600. Its totient is φ = 168347484.

The previous prime is 252521251. The next prime is 252521293. The reversal of 252521253 is 352125252.

252521253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252521253 - 2¹ = 252521251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9352639 = 252521253 / (2 + 5 + 2 + 5 + 2 + 1 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252521251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676293 + ... + 4676346.

It is an arithmetic number, because the mean of its divisors is an integer number (46763200).

Almost surely, 2^252521253 is an apocalyptic number.

It is an amenable number.

252521253 is a deficient number, since it is larger than the sum of its proper divisors (121584347).

252521253 is an equidigital number, since it uses as much as digits as its factorization.

252521253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352648 (or 9352642 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 252521253 is about 15890.9173114707. The cubic root of 252521253 is about 632.0711653092.

The spelling of 252521253 in words is "two hundred fifty-two million, five hundred twenty-one thousand, two hundred fifty-three".