25553445155 has 32 divisors (see below), whose sum is σ = 35273591808. Its totient is φ = 17408131200.

The previous prime is 25553445131. The next prime is 25553445187. The reversal of 25553445155 is 55154435552.

It is not a de Polignac number, because 25553445155 - 2²⁸ = 25285009699 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 11598284 + ... + 11600486.

It is an arithmetic number, because the mean of its divisors is an integer number (1102299744).

Almost surely, 2^25553445155 is an apocalyptic number.

25553445155 is a deficient number, since it is larger than the sum of its proper divisors (9720146653).

25553445155 is a wasteful number, since it uses less digits than its factorization.

25553445155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227.

The product of its digits is 1500000, while the sum is 44.

The spelling of 25553445155 in words is "twenty-five billion, five hundred fifty-three million, four hundred forty-five thousand, one hundred fifty-five".