166625227 has 2 divisors, whose sum is σ = 166625228. Its totient is φ = 166625226.

The previous prime is 166625219. The next prime is 166625243. The reversal of 166625227 is 722526661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166625227 - 2³ = 166625219 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166625257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83312613 + 83312614.

It is an arithmetic number, because the mean of its divisors is an integer number (83312614).

Almost surely, 2^166625227 is an apocalyptic number.

166625227 is a deficient number, since it is larger than the sum of its proper divisors (1).

166625227 is an equidigital number, since it uses as much as digits as its factorization.

166625227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 166625227 is about 12908.3394361940. The cubic root of 166625227 is about 550.2755941136.

The spelling of 166625227 in words is "one hundred sixty-six million, six hundred twenty-five thousand, two hundred twenty-seven".