25575128055 has 32 divisors (see below), whose sum is σ = 45557406720. Its totient is φ = 13612914720.

The previous prime is 25575128023. The next prime is 25575128077. The reversal of 25575128055 is 55082157552.

25575128055 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 512 + 80 + 55 = 666.

It is not a de Polignac number, because 25575128055 - 2⁵ = 25575128023 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 25575128055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120411 + ... + 256220.

It is an arithmetic number, because the mean of its divisors is an integer number (1423668960).

Almost surely, 2^25575128055 is an apocalyptic number.

25575128055 is a deficient number, since it is larger than the sum of its proper divisors (19982278665).

25575128055 is a wasteful number, since it uses less digits than its factorization.

25575128055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377148 (or 377142 counting only the distinct ones).

The product of its (nonzero) digits is 700000, while the sum is 45.

The spelling of 25575128055 in words is "twenty-five billion, five hundred seventy-five million, one hundred twenty-eight thousand, fifty-five".