128859225 has 48 divisors (see below), whose sum is σ = 242555904. Its totient is φ = 59752000.

The previous prime is 128859173. The next prime is 128859251. The reversal of 128859225 is 522958821.

It is not a de Polignac number, because 128859225 - 2⁷ = 128859097 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, 15580 + ... + 22370.

It is an arithmetic number, because the mean of its divisors is an integer number (5053248).

Almost surely, 2^128859225 is an apocalyptic number.

128859225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128859225 is a deficient number, since it is larger than the sum of its proper divisors (113696679).

128859225 is a wasteful number, since it uses less digits than its factorization.

128859225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838 (or 6833 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 128859225 is about 11351.6177261217. The cubic root of 128859225 is about 505.0935682584.

The spelling of 128859225 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, two hundred twenty-five".