166833225 has 36 divisors (see below), whose sum is σ = 321808396. Its totient is φ = 82131840.

The previous prime is 166833217. The next prime is 166833229. The reversal of 166833225 is 522338661.

It is a happy number.

166833225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 53538489 + 113294736 = 7317^2 + 10644^2 .

It is not a de Polignac number, because 166833225 - 2³ = 166833217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166833225.

It is not an unprimeable number, because it can be changed into a prime (166833229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25594 + ... + 31443.

Almost surely, 2^166833225 is an apocalyptic number.

166833225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166833225 is a deficient number, since it is larger than the sum of its proper divisors (154975171).

166833225 is a wasteful number, since it uses less digits than its factorization.

166833225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57066 (or 57058 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 166833225 is about 12916.3936530287. The cubic root of 166833225 is about 550.5044682821.

The spelling of 166833225 in words is "one hundred sixty-six million, eight hundred thirty-three thousand, two hundred twenty-five".