164893425 has 24 divisors (see below), whose sum is σ = 273390240. Its totient is φ = 87696000.

The previous prime is 164893409. The next prime is 164893429. The reversal of 164893425 is 524398461.

It is not a de Polignac number, because 164893425 - 2⁴ = 164893409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164893429) 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 23 ways as a sum of consecutive naturals, for example, 25525 + ... + 31325.

It is an arithmetic number, because the mean of its divisors is an integer number (11391260).

Almost surely, 2^164893425 is an apocalyptic number.

164893425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164893425 is a deficient number, since it is larger than the sum of its proper divisors (108496815).

164893425 is a wasteful number, since it uses less digits than its factorization.

164893425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193 (or 6188 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 164893425 is about 12841.0834823234. The cubic root of 164893425 is about 548.3625402620.

The spelling of 164893425 in words is "one hundred sixty-four million, eight hundred ninety-three thousand, four hundred twenty-five".