166225227 has 8 divisors (see below), whose sum is σ = 253295616. Its totient is φ = 94985832.

The previous prime is 166225219. The next prime is 166225237. The reversal of 166225227 is 722522661.

166225227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 166225227 - 2³ = 166225219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166225237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3957723 + ... + 3957764.

It is an arithmetic number, because the mean of its divisors is an integer number (31661952).

Almost surely, 2^166225227 is an apocalyptic number.

166225227 is a deficient number, since it is larger than the sum of its proper divisors (87070389).

166225227 is an equidigital number, since it uses as much as digits as its factorization.

166225227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915497.

The product of its digits is 20160, while the sum is 33.

The square root of 166225227 is about 12892.8362667025. The cubic root of 166225227 is about 549.8349113333.

Adding to 166225227 its reverse (722522661), we get a palindrome (888747888).

The spelling of 166225227 in words is "one hundred sixty-six million, two hundred twenty-five thousand, two hundred twenty-seven".