128553625 has 16 divisors (see below), whose sum is σ = 163163520. Its totient is φ = 101094000.

The previous prime is 128553583. The next prime is 128553653. The reversal of 128553625 is 526355821.

It is a happy number.

It is not a de Polignac number, because 128553625 - 2¹⁵ = 128520857 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341 + ... + 16090.

It is an arithmetic number, because the mean of its divisors is an integer number (10197720).

Almost surely, 2^128553625 is an apocalyptic number.

It is an amenable number.

128553625 is a deficient number, since it is larger than the sum of its proper divisors (34609895).

128553625 is an equidigital number, since it uses as much as digits as its factorization.

128553625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17505 (or 17495 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 128553625 is about 11338.1490993901. The cubic root of 128553625 is about 504.6939622064.

The spelling of 128553625 in words is "one hundred twenty-eight million, five hundred fifty-three thousand, six hundred twenty-five".