225571966 has 8 divisors (see below), whose sum is σ = 338592384. Its totient is φ = 112707840.

The previous prime is 225571909. The next prime is 225571967. The reversal of 225571966 is 669175522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225571967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35395 + ... + 41278.

It is an arithmetic number, because the mean of its divisors is an integer number (42324048).

Almost surely, 2^225571966 is an apocalyptic number.

225571966 is a deficient number, since it is larger than the sum of its proper divisors (113020418).

225571966 is a wasteful number, since it uses less digits than its factorization.

225571966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78146.

The product of its digits is 226800, while the sum is 43.

The square root of 225571966 is about 15019.0534322240. The cubic root of 225571966 is about 608.7351431286.

The spelling of 225571966 in words is "two hundred twenty-five million, five hundred seventy-one thousand, nine hundred sixty-six".