225709188 has 12 divisors (see below), whose sum is σ = 526654800. Its totient is φ = 75236392.

The previous prime is 225709123. The next prime is 225709217. The reversal of 225709188 is 881907522.

225709188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9404538 + ... + 9404561.

It is an arithmetic number, because the mean of its divisors is an integer number (43887900).

Almost surely, 2^225709188 is an apocalyptic number.

It is an amenable number.

225709188 is an abundant number, since it is smaller than the sum of its proper divisors (300945612).

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

225709188 is a wasteful number, since it uses less digits than its factorization.

225709188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18809106 (or 18809104 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 225709188 is about 15023.6210016094. The cubic root of 225709188 is about 608.8585552156.

The spelling of 225709188 in words is "two hundred twenty-five million, seven hundred nine thousand, one hundred eighty-eight".