228285825 has 24 divisors (see below), whose sum is σ = 390451200. Its totient is φ = 117552960.

The previous prime is 228285823. The next prime is 228285847. The reversal of 228285825 is 528582822.

It is not a de Polignac number, because 228285825 - 2¹ = 228285823 is a prime.

It is a super-2 number, since 2×228285825² = 104228835791861250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228285823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50305 + ... + 54654.

It is an arithmetic number, because the mean of its divisors is an integer number (16268800).

Almost surely, 2^228285825 is an apocalyptic number.

228285825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228285825 is a deficient number, since it is larger than the sum of its proper divisors (162165375).

228285825 is a wasteful number, since it uses less digits than its factorization.

228285825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105001 (or 104996 counting only the distinct ones).

The product of its digits is 204800, while the sum is 42.

The square root of 228285825 is about 15109.1305176704. The cubic root of 228285825 is about 611.1666511199.

The spelling of 228285825 in words is "two hundred twenty-eight million, two hundred eighty-five thousand, eight hundred twenty-five".