25957238867 has 16 divisors (see below), whose sum is σ = 30395592192. Its totient is φ = 21701666880.

The previous prime is 25957238863. The next prime is 25957238891. The reversal of 25957238867 is 76883275952.

It is a cyclic number.

It is not a de Polignac number, because 25957238867 - 2² = 25957238863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25957238861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2072498 + ... + 2084984.

It is an arithmetic number, because the mean of its divisors is an integer number (1899724512).

Almost surely, 2^25957238867 is an apocalyptic number.

25957238867 is a deficient number, since it is larger than the sum of its proper divisors (4438353325).

25957238867 is a wasteful number, since it uses less digits than its factorization.

25957238867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19778.

The product of its digits is 50803200, while the sum is 62.

The spelling of 25957238867 in words is "twenty-five billion, nine hundred fifty-seven million, two hundred thirty-eight thousand, eight hundred sixty-seven".