164680625 has 10 divisors (see below), whose sum is σ = 205785690. Its totient is φ = 131744000.

The previous prime is 164680609. The next prime is 164680631. The reversal of 164680625 is 526086461.

164680625 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 5 ways, for example, as 32982049 + 131698576 = 5743^2 + 11476^2 .

It is not a de Polignac number, because 164680625 - 2⁴ = 164680609 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 131120 + ... + 132369.

It is an arithmetic number, because the mean of its divisors is an integer number (20578569).

Almost surely, 2^164680625 is an apocalyptic number.

It is an amenable number.

164680625 is a deficient number, since it is larger than the sum of its proper divisors (41105065).

164680625 is an frugal number, since it uses more digits than its factorization.

164680625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263509 (or 263494 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 164680625 is about 12832.7949021248. The cubic root of 164680625 is about 548.1265458460.

The spelling of 164680625 in words is "one hundred sixty-four million, six hundred eighty thousand, six hundred twenty-five".