25555502179 has 2 divisors, whose sum is σ = 25555502180. Its totient is φ = 25555502178.

The previous prime is 25555502173. The next prime is 25555502233. The reversal of 25555502179 is 97120555552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25555502179 - 2⁷ = 25555502051 is a prime.

It is not a weakly prime, because it can be changed into another prime (25555502173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777751089 + 12777751090.

It is an arithmetic number, because the mean of its divisors is an integer number (12777751090).

Almost surely, 2^25555502179 is an apocalyptic number.

25555502179 is a deficient number, since it is larger than the sum of its proper divisors (1).

25555502179 is an equidigital number, since it uses as much as digits as its factorization.

25555502179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787500, while the sum is 46.

The spelling of 25555502179 in words is "twenty-five billion, five hundred fifty-five million, five hundred two thousand, one hundred seventy-nine".