25559879 has 2 divisors, whose sum is σ = 25559880. Its totient is φ = 25559878.

The previous prime is 25559861. The next prime is 25559951. The reversal of 25559879 is 97895552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25559879 - 2⁸ = 25559623 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25556879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12779939 + 12779940.

It is an arithmetic number, because the mean of its divisors is an integer number (12779940).

Almost surely, 2^25559879 is an apocalyptic number.

25559879 is a deficient number, since it is larger than the sum of its proper divisors (1).

25559879 is an equidigital number, since it uses as much as digits as its factorization.

25559879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 50.

The square root of 25559879 is about 5055.6778971766. The cubic root of 25559879 is about 294.5684737342.

The spelling of 25559879 in words is "twenty-five million, five hundred fifty-nine thousand, eight hundred seventy-nine".