128874225 has 48 divisors (see below), whose sum is σ = 220968000. Its totient is φ = 66232320.

The previous prime is 128874211. The next prime is 128874227. The reversal of 128874225 is 522478821.

It is not a de Polignac number, because 128874225 - 2⁴ = 128874209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128874227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286801 + ... + 287249.

It is an arithmetic number, because the mean of its divisors is an integer number (4603500).

Almost surely, 2^128874225 is an apocalyptic number.

128874225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128874225 is a deficient number, since it is larger than the sum of its proper divisors (92093775).

128874225 is a wasteful number, since it uses less digits than its factorization.

128874225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 589 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 128874225 is about 11352.2784056770. The cubic root of 128874225 is about 505.1131661557.

The spelling of 128874225 in words is "one hundred twenty-eight million, eight hundred seventy-four thousand, two hundred twenty-five".