228625033 has 12 divisors (see below), whose sum is σ = 286410180. Its totient is φ = 180889632.

The previous prime is 228625021. The next prime is 228625051. The reversal of 228625033 is 330526822.

It can be written as a sum of positive squares in 2 ways, for example, as 140114569 + 88510464 = 11837^2 + 9408^2 .

It is a de Polignac number, because none of the positive numbers 2^k-228625033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228624986 and 228625004.

It is not an unprimeable number, because it can be changed into a prime (228625003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178818 + ... + 180091.

It is an arithmetic number, because the mean of its divisors is an integer number (23867515).

Almost surely, 2^228625033 is an apocalyptic number.

It is an amenable number.

228625033 is a deficient number, since it is larger than the sum of its proper divisors (57785147).

228625033 is a wasteful number, since it uses less digits than its factorization.

228625033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358936 (or 358929 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 228625033 is about 15120.3516162819. The cubic root of 228625033 is about 611.4692104527.

The spelling of 228625033 in words is "two hundred twenty-eight million, six hundred twenty-five thousand, thirty-three".