25667742959 has 2 divisors, whose sum is σ = 25667742960. Its totient is φ = 25667742958.

The previous prime is 25667742937. The next prime is 25667742983. The reversal of 25667742959 is 95924776652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25667742959 - 2⁸ = 25667742703 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25667742059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12833871479 + 12833871480.

It is an arithmetic number, because the mean of its divisors is an integer number (12833871480).

Almost surely, 2^25667742959 is an apocalyptic number.

25667742959 is a deficient number, since it is larger than the sum of its proper divisors (1).

25667742959 is an equidigital number, since it uses as much as digits as its factorization.

25667742959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57153600, while the sum is 62.

The spelling of 25667742959 in words is "twenty-five billion, six hundred sixty-seven million, seven hundred forty-two thousand, nine hundred fifty-nine".