166750825 has 6 divisors (see below), whose sum is σ = 206771054. Its totient is φ = 133400640.

The previous prime is 166750811. The next prime is 166750867. The reversal of 166750825 is 528057661.

166750825 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 3 ways, for example, as 16418704 + 150332121 = 4052^2 + 12261^2 .

It is not a de Polignac number, because 166750825 - 2¹⁹ = 166226537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3334992 + ... + 3335041.

Almost surely, 2^166750825 is an apocalyptic number.

It is an amenable number.

166750825 is a deficient number, since it is larger than the sum of its proper divisors (40020229).

166750825 is an equidigital number, since it uses as much as digits as its factorization.

166750825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670043 (or 6670038 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 166750825 is about 12913.2035142330. The cubic root of 166750825 is about 550.4138207940.

The spelling of 166750825 in words is "one hundred sixty-six million, seven hundred fifty thousand, eight hundred twenty-five".