128858225 has 12 divisors (see below), whose sum is σ = 160168320. Its totient is φ = 102838800.

The previous prime is 128858207. The next prime is 128858231. The reversal of 128858225 is 522858821.

It is not a de Polignac number, because 128858225 - 2¹² = 128854129 is a prime.

It is a Curzon 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, 4796 + ... + 16754.

It is an arithmetic number, because the mean of its divisors is an integer number (13347360).

Almost surely, 2^128858225 is an apocalyptic number.

It is an amenable number.

128858225 is a deficient number, since it is larger than the sum of its proper divisors (31310095).

128858225 is a wasteful number, since it uses less digits than its factorization.

128858225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400 (or 12395 counting only the distinct ones).

The product of its digits is 102400, while the sum is 41.

The square root of 128858225 is about 11351.5736794508. The cubic root of 128858225 is about 505.0922616779.

The spelling of 128858225 in words is "one hundred twenty-eight million, eight hundred fifty-eight thousand, two hundred twenty-five".