225568066 has 4 divisors (see below), whose sum is σ = 338352102. Its totient is φ = 112784032.

The previous prime is 225568037. The next prime is 225568093. The reversal of 225568066 is 660865522.

It is a happy number.

225568066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660865522 = 2 ⋅330432761.

It can be written as a sum of positive squares in only one way, i.e., 191684025 + 33884041 = 13845^2 + 5821^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56392015 + ... + 56392018.

Almost surely, 2^225568066 is an apocalyptic number.

225568066 is a deficient number, since it is larger than the sum of its proper divisors (112784036).

225568066 is a wasteful number, since it uses less digits than its factorization.

225568066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112784035.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 225568066 is about 15018.9235965831. The cubic root of 225568066 is about 608.7316348902.

The spelling of 225568066 in words is "two hundred twenty-five million, five hundred sixty-eight thousand, sixty-six".