128875525 has 24 divisors (see below), whose sum is σ = 166060800. Its totient is φ = 99110400.

The previous prime is 128875517. The next prime is 128875541. The reversal of 128875525 is 525578821.

It is not a de Polignac number, because 128875525 - 2³ = 128875517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138261 + ... + 139189.

It is an arithmetic number, because the mean of its divisors is an integer number (6919200).

Almost surely, 2^128875525 is an apocalyptic number.

It is an amenable number.

128875525 is a deficient number, since it is larger than the sum of its proper divisors (37185275).

128875525 is a wasteful number, since it uses less digits than its factorization.

128875525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1144 counting only the distinct ones).

The product of its digits is 224000, while the sum is 43.

The square root of 128875525 is about 11352.3356627612. The cubic root of 128875525 is about 505.1148645685.

The spelling of 128875525 in words is "one hundred twenty-eight million, eight hundred seventy-five thousand, five hundred twenty-five".