25908860155 has 4 divisors (see below), whose sum is σ = 31090632192. Its totient is φ = 20727088120.

The previous prime is 25908860119. The next prime is 25908860167. The reversal of 25908860155 is 55106880952.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25908860155 - 2⁹ = 25908859643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25908860099 and 25908860108.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2590886011 + ... + 2590886020.

It is an arithmetic number, because the mean of its divisors is an integer number (7772658048).

Almost surely, 2^25908860155 is an apocalyptic number.

25908860155 is a deficient number, since it is larger than the sum of its proper divisors (5181772037).

25908860155 is an equidigital number, since it uses as much as digits as its factorization.

25908860155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181772036.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 25908860155 in words is "twenty-five billion, nine hundred eight million, eight hundred sixty thousand, one hundred fifty-five".