25567957 has 4 divisors (see below), whose sum is σ = 25581600. Its totient is φ = 25554316.

The previous prime is 25567951. The next prime is 25567961. The reversal of 25567957 is 75976552.

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 not a de Polignac number, because 25567957 - 2¹⁵ = 25535189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25567951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3457 + ... + 7942.

It is an arithmetic number, because the mean of its divisors is an integer number (6395400).

Almost surely, 2^25567957 is an apocalyptic number.

It is an amenable number.

25567957 is a deficient number, since it is larger than the sum of its proper divisors (13643).

25567957 is a wasteful number, since it uses less digits than its factorization.

25567957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13642.

The product of its digits is 661500, while the sum is 46.

The square root of 25567957 is about 5056.4767378086. The cubic root of 25567957 is about 294.5995024870.

The spelling of 25567957 in words is "twenty-five million, five hundred sixty-seven thousand, nine hundred fifty-seven".