166834225 has 6 divisors (see below), whose sum is σ = 206874470. Its totient is φ = 133467360.

The previous prime is 166834223. The next prime is 166834229. The reversal of 166834225 is 522438661.

It can be written as a sum of positive squares in 3 ways, for example, as 12503296 + 154330929 = 3536^2 + 12423^2 .

It is not a de Polignac number, because 166834225 - 2¹ = 166834223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166834223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3336660 + ... + 3336709.

Almost surely, 2^166834225 is an apocalyptic number.

It is an amenable number.

166834225 is a deficient number, since it is larger than the sum of its proper divisors (40040245).

166834225 is an equidigital number, since it uses as much as digits as its factorization.

166834225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673379 (or 6673374 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 166834225 is about 12916.4323634663. The cubic root of 166834225 is about 550.5055681896.

The spelling of 166834225 in words is "one hundred sixty-six million, eight hundred thirty-four thousand, two hundred twenty-five".