25554430055 has 16 divisors (see below), whose sum is σ = 38232082944. Its totient is φ = 15930034080.

The previous prime is 25554430049. The next prime is 25554430079. The reversal of 25554430055 is 55003445552.

It is not a de Polignac number, because 25554430055 - 2⁶ = 25554429991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33187187 + ... + 33187956.

It is an arithmetic number, because the mean of its divisors is an integer number (2389505184).

Almost surely, 2^25554430055 is an apocalyptic number.

25554430055 is a deficient number, since it is larger than the sum of its proper divisors (12677652889).

25554430055 is a wasteful number, since it uses less digits than its factorization.

25554430055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66375166.

The product of its (nonzero) digits is 300000, while the sum is 38.

The spelling of 25554430055 in words is "twenty-five billion, five hundred fifty-four million, four hundred thirty thousand, fifty-five".