128225502 has 24 divisors (see below), whose sum is σ = 278337384. Its totient is φ = 42662544.

The previous prime is 128225429. The next prime is 128225521. The reversal of 128225502 is 205522821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3808 + ... + 16460.

It is an arithmetic number, because the mean of its divisors is an integer number (11597391).

Almost surely, 2^128225502 is an apocalyptic number.

128225502 is an abundant number, since it is smaller than the sum of its proper divisors (150111882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128225502 is a wasteful number, since it uses less digits than its factorization.

128225502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13224 (or 13221 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 128225502 is about 11323.6699881266. The cubic root of 128225502 is about 504.2641991609.

The spelling of 128225502 in words is "one hundred twenty-eight million, two hundred twenty-five thousand, five hundred two".