228043825 has 6 divisors (see below), whose sum is σ = 282774374. Its totient is φ = 182435040.

The previous prime is 228043819. The next prime is 228043841. The reversal of 228043825 is 528340822.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 46117681 + 181926144 = 6791^2 + 13488^2 .

It is not a de Polignac number, because 228043825 - 2⁵ = 228043793 is a prime.

It is a super-2 number, since 2×228043825² = 104007972241261250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4560852 + ... + 4560901.

Almost surely, 2^228043825 is an apocalyptic number.

228043825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228043825 is a deficient number, since it is larger than the sum of its proper divisors (54730549).

228043825 is an equidigital number, since it uses as much as digits as its factorization.

228043825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9121763 (or 9121758 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 228043825 is about 15101.1199915768. The cubic root of 228043825 is about 610.9506140198.

The spelling of 228043825 in words is "two hundred twenty-eight million, forty-three thousand, eight hundred twenty-five".