25553033405055 has 72 divisors (see below), whose sum is σ = 47966529224016. Its totient is φ = 12578525107200.

The previous prime is 25553033405033. The next prime is 25553033405069. The reversal of 25553033405055 is 55050433035552.

25553033405055 is a `hidden beast` number, since 2 + 5 + 553 + 0 + 3 + 3 + 40 + 5 + 0 + 55 = 666.

It is not a de Polignac number, because 25553033405055 - 2¹² = 25553033400959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25553033405055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 68342215 + ... + 68715095.

It is an arithmetic number, because the mean of its divisors is an integer number (666201794778).

Almost surely, 2^{25553033405055} is an apocalyptic number.

25553033405055 is a deficient number, since it is larger than the sum of its proper divisors (22413495818961).

25553033405055 is a wasteful number, since it uses less digits than its factorization.

25553033405055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381929 (or 381913 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 45.

The spelling of 25553033405055 in words is "twenty-five trillion, five hundred fifty-three billion, thirty-three million, four hundred five thousand, fifty-five".