128323825 has 24 divisors (see below), whose sum is σ = 186093248. Its totient is φ = 85942080.

The previous prime is 128323823. The next prime is 128323841. The reversal of 128323825 is 528323821.

It is not a de Polignac number, because 128323825 - 2¹ = 128323823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128323823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1002 + ... + 16051.

Almost surely, 2^128323825 is an apocalyptic number.

It is an amenable number.

128323825 is a deficient number, since it is larger than the sum of its proper divisors (57769423).

128323825 is a wasteful number, since it uses less digits than its factorization.

128323825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17113 (or 17108 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 128323825 is about 11328.0106373538. The cubic root of 128323825 is about 504.3930557473.

The spelling of 128323825 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, eight hundred twenty-five".