128225079 has 16 divisors (see below), whose sum is σ = 191244000. Its totient is φ = 84907008.

The previous prime is 128225063. The next prime is 128225087. The reversal of 128225079 is 970522821.

128225079 is a `hidden beast` number, since 128 + 22 + 507 + 9 = 666.

It is not a de Polignac number, because 128225079 - 2⁴ = 128225063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128225089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11914 + ... + 19959.

It is an arithmetic number, because the mean of its divisors is an integer number (11952750).

Almost surely, 2^128225079 is an apocalyptic number.

128225079 is a deficient number, since it is larger than the sum of its proper divisors (63018921).

128225079 is a wasteful number, since it uses less digits than its factorization.

128225079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32031 (or 32025 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 128225079 is about 11323.6513104210. The cubic root of 128225079 is about 504.2636446586.

The spelling of 128225079 in words is "one hundred twenty-eight million, two hundred twenty-five thousand, seventy-nine".