228125865 has 32 divisors (see below), whose sum is σ = 398908800. Its totient is φ = 110405120.

The previous prime is 228125857. The next prime is 228125881. The reversal of 228125865 is 568521822.

It is not a de Polignac number, because 228125865 - 2³ = 228125857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132631 + ... + 134339.

It is an arithmetic number, because the mean of its divisors is an integer number (12465900).

Almost surely, 2^228125865 is an apocalyptic number.

It is an amenable number.

228125865 is a deficient number, since it is larger than the sum of its proper divisors (170782935).

228125865 is a wasteful number, since it uses less digits than its factorization.

228125865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537.

The product of its digits is 76800, while the sum is 39.

The square root of 228125865 is about 15103.8361021298. The cubic root of 228125865 is about 611.0238694989.

The spelling of 228125865 in words is "two hundred twenty-eight million, one hundred twenty-five thousand, eight hundred sixty-five".