228725233 has 16 divisors (see below), whose sum is σ = 260573760. Its totient is φ = 198856000.

The previous prime is 228725219. The next prime is 228725251. The reversal of 228725233 is 332527822.

It is a cyclic number.

It is not a de Polignac number, because 228725233 - 2⁵ = 228725201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228726233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30783 + ... + 37483.

It is an arithmetic number, because the mean of its divisors is an integer number (16285860).

Almost surely, 2^228725233 is an apocalyptic number.

It is an amenable number.

228725233 is a deficient number, since it is larger than the sum of its proper divisors (31848527).

228725233 is a wasteful number, since it uses less digits than its factorization.

228725233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848.

The product of its digits is 40320, while the sum is 34.

The square root of 228725233 is about 15123.6646683269. The cubic root of 228725233 is about 611.5585273944.

The spelling of 228725233 in words is "two hundred twenty-eight million, seven hundred twenty-five thousand, two hundred thirty-three".