223225566 has 64 divisors (see below), whose sum is σ = 486017280. Its totient is φ = 68117760.

The previous prime is 223225553. The next prime is 223225571. The reversal of 223225566 is 665522322.

It is a super-3 number, since 3×223225566³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 761716 + ... + 762008.

It is an arithmetic number, because the mean of its divisors is an integer number (7594020).

Almost surely, 2^223225566 is an apocalyptic number.

223225566 is an abundant number, since it is smaller than the sum of its proper divisors (262791714).

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

223225566 is a wasteful number, since it uses less digits than its factorization.

223225566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521.

The product of its digits is 43200, while the sum is 33.

The square root of 223225566 is about 14940.7351224764. The cubic root of 223225566 is about 606.6170940588.

Adding to 223225566 its reverse (665522322), we get a palindrome (888747888).

The spelling of 223225566 in words is "two hundred twenty-three million, two hundred twenty-five thousand, five hundred sixty-six".