128925568 has 16 divisors (see below), whose sum is σ = 256844160. Its totient is φ = 64462720.

The previous prime is 128925541. The next prime is 128925581. The reversal of 128925568 is 865529821.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503488 + ... + 503743.

It is an arithmetic number, because the mean of its divisors is an integer number (16052760).

Almost surely, 2^128925568 is an apocalyptic number.

It is an amenable number.

128925568 is a deficient number, since it is larger than the sum of its proper divisors (127918592).

128925568 is an equidigital number, since it uses as much as digits as its factorization.

128925568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007245 (or 1007233 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 128925568 is about 11354.5395327155. The cubic root of 128925568 is about 505.1802356364.

The spelling of 128925568 in words is "one hundred twenty-eight million, nine hundred twenty-five thousand, five hundred sixty-eight".