228525242 has 16 divisors (see below), whose sum is σ = 386014464. Its totient is φ = 100524000.

The previous prime is 228525229. The next prime is 228525247. The reversal of 228525242 is 242525822.

It is a junction number, because it is equal to n+sod(n) for n = 228525199 and 228525208.

It is not an unprimeable number, because it can be changed into a prime (228525247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166859 + ... + 168222.

It is an arithmetic number, because the mean of its divisors is an integer number (24125904).

Almost surely, 2^228525242 is an apocalyptic number.

228525242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

228525242 is a deficient number, since it is larger than the sum of its proper divisors (157489222).

228525242 is a wasteful number, since it uses less digits than its factorization.

228525242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335125.

The product of its digits is 25600, while the sum is 32.

The square root of 228525242 is about 15117.0513659245. The cubic root of 228525242 is about 611.3802321472.

The spelling of 228525242 in words is "two hundred twenty-eight million, five hundred twenty-five thousand, two hundred forty-two".