25559057 has 2 divisors, whose sum is σ = 25559058. Its totient is φ = 25559056.

The previous prime is 25559033. The next prime is 25559069. The reversal of 25559057 is 75095552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22429696 + 3129361 = 4736^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 25559057 - 2⁸ = 25558801 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25559057.

It is not a weakly prime, because it can be changed into another prime (25559657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12779528 + 12779529.

It is an arithmetic number, because the mean of its divisors is an integer number (12779529).

Almost surely, 2^25559057 is an apocalyptic number.

It is an amenable number.

25559057 is a deficient number, since it is larger than the sum of its proper divisors (1).

25559057 is an equidigital number, since it uses as much as digits as its factorization.

25559057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78750, while the sum is 38.

The square root of 25559057 is about 5055.5966017870. The cubic root of 25559057 is about 294.5653159482.

The spelling of 25559057 in words is "twenty-five million, five hundred fifty-nine thousand, fifty-seven".