225660222 has 64 divisors (see below), whose sum is σ = 540241920. Its totient is φ = 69616800.

The previous prime is 225660203. The next prime is 225660241. The reversal of 225660222 is 222066522.

225660222 is a `hidden beast` number, since 2 + 2 + 56 + 602 + 2 + 2 = 666.

225660222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225660203) and next prime (225660241).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 35572 + ... + 41432.

It is an arithmetic number, because the mean of its divisors is an integer number (8441280).

Almost surely, 2^225660222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225660222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270120960).

225660222 is an abundant number, since it is smaller than the sum of its proper divisors (314581698).

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

225660222 is a wasteful number, since it uses less digits than its factorization.

225660222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926 (or 5920 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 225660222 is about 15021.9912794543. The cubic root of 225660222 is about 608.8145228562.

The spelling of 225660222 in words is "two hundred twenty-five million, six hundred sixty thousand, two hundred twenty-two".