252425257 has 4 divisors (see below), whose sum is σ = 288486016. Its totient is φ = 216364500.

The previous prime is 252425213. The next prime is 252425267. The reversal of 252425257 is 752524252.

252425257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252425257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252425267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18030369 + ... + 18030382.

It is an arithmetic number, because the mean of its divisors is an integer number (72121504).

Almost surely, 2^252425257 is an apocalyptic number.

It is an amenable number.

252425257 is a deficient number, since it is larger than the sum of its proper divisors (36060759).

252425257 is an equidigital number, since it uses as much as digits as its factorization.

252425257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36060758.

The product of its digits is 56000, while the sum is 34.

The square root of 252425257 is about 15887.8965568133. The cubic root of 252425257 is about 631.9910611685.

The spelling of 252425257 in words is "two hundred fifty-two million, four hundred twenty-five thousand, two hundred fifty-seven".