164344625 has 16 divisors (see below), whose sum is σ = 206484096. Its totient is φ = 130590000.

The previous prime is 164344619. The next prime is 164344657. The reversal of 164344625 is 526443461.

It is a de Polignac number, because none of the positive numbers 2^k-164344625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14522 + ... + 23228.

It is an arithmetic number, because the mean of its divisors is an integer number (12905256).

Almost surely, 2^164344625 is an apocalyptic number.

It is an amenable number.

164344625 is a deficient number, since it is larger than the sum of its proper divisors (42139471).

164344625 is an equidigital number, since it uses as much as digits as its factorization.

164344625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873 (or 8863 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 164344625 is about 12819.6967592841. The cubic root of 164344625 is about 547.7535088099.

The spelling of 164344625 in words is "one hundred sixty-four million, three hundred forty-four thousand, six hundred twenty-five".