2522865257 has 4 divisors (see below), whose sum is σ = 2752216656. Its totient is φ = 2293513860.

The previous prime is 2522865251. The next prime is 2522865269. The reversal of 2522865257 is 7525682252.

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 not a de Polignac number, because 2522865257 - 2¹⁰ = 2522864233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2522865251) 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, 114675683 + ... + 114675704.

It is an arithmetic number, because the mean of its divisors is an integer number (688054164).

Almost surely, 2^2522865257 is an apocalyptic number.

It is an amenable number.

2522865257 is a deficient number, since it is larger than the sum of its proper divisors (229351399).

2522865257 is a wasteful number, since it uses less digits than its factorization.

2522865257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229351398.

The product of its digits is 672000, while the sum is 44.

The square root of 2522865257 is about 50228.1321273248. The cubic root of 2522865257 is about 1361.3339810848. Note that the first 3 decimals are identical.

The spelling of 2522865257 in words is "two billion, five hundred twenty-two million, eight hundred sixty-five thousand, two hundred fifty-seven".