25588558855 has 4 divisors (see below), whose sum is σ = 30706270632. Its totient is φ = 20470847080.

The previous prime is 25588558843. The next prime is 25588558859. The reversal of 25588558855 is 55885588552.

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

It is not a de Polignac number, because 25588558855 - 2³³ = 16998624263 is a prime.

It is a super-2 number, since 2×25588558855² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25588558859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558855881 + ... + 2558855890.

It is an arithmetic number, because the mean of its divisors is an integer number (7676567658).

Almost surely, 2^25588558855 is an apocalyptic number.

25588558855 is a deficient number, since it is larger than the sum of its proper divisors (5117711777).

25588558855 is an equidigital number, since it uses as much as digits as its factorization.

25588558855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117711776.

The product of its digits is 128000000, while the sum is 64.

The spelling of 25588558855 in words is "twenty-five billion, five hundred eighty-eight million, five hundred fifty-eight thousand, eight hundred fifty-five".