225808188 has 24 divisors (see below), whose sum is σ = 541126992. Its totient is φ = 73234944.

The previous prime is 225808183. The next prime is 225808189. The reversal of 225808188 is 881808522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225808183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253845 + ... + 254732.

It is an arithmetic number, because the mean of its divisors is an integer number (22546958).

Almost surely, 2^225808188 is an apocalyptic number.

It is an amenable number.

225808188 is an abundant number, since it is smaller than the sum of its proper divisors (315318804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225808188 is a wasteful number, since it uses less digits than its factorization.

225808188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508621 (or 508619 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 225808188 is about 15026.9154519482. The cubic root of 225808188 is about 608.9475608764.

The spelling of 225808188 in words is "two hundred twenty-five million, eight hundred eight thousand, one hundred eighty-eight".