128133585825 has 48 divisors (see below), whose sum is σ = 242587628160. Its totient is φ = 58460152320.

The previous prime is 128133585809. The next prime is 128133585847. The reversal of 128133585825 is 528585331821.

It is not a de Polignac number, because 128133585825 - 2⁴ = 128133585809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27477 + ... + 506973.

It is an arithmetic number, because the mean of its divisors is an integer number (5053908920).

Almost surely, 2^128133585825 is an apocalyptic number.

128133585825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128133585825 is a deficient number, since it is larger than the sum of its proper divisors (114454042335).

128133585825 is a wasteful number, since it uses less digits than its factorization.

128133585825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480026 (or 480021 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 51.

The spelling of 128133585825 in words is "one hundred twenty-eight billion, one hundred thirty-three million, five hundred eighty-five thousand, eight hundred twenty-five".