128982725 has 12 divisors (see below), whose sum is σ = 160287360. Its totient is φ = 102961200.

The previous prime is 128982701. The next prime is 128982727. The reversal of 128982725 is 527289821.

It is a de Polignac number, because none of the positive numbers 2^k-128982725 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128982727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6590 + ... + 17360.

It is an arithmetic number, because the mean of its divisors is an integer number (13357280).

Almost surely, 2^128982725 is an apocalyptic number.

It is an amenable number.

128982725 is a deficient number, since it is larger than the sum of its proper divisors (31304635).

128982725 is a wasteful number, since it uses less digits than its factorization.

128982725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11260 (or 11255 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 128982725 is about 11357.0561766683. The cubic root of 128982725 is about 505.2548790171.

The spelling of 128982725 in words is "one hundred twenty-eight million, nine hundred eighty-two thousand, seven hundred twenty-five".