164425975 has 24 divisors (see below), whose sum is σ = 237984768. Its totient is φ = 110344800.

The previous prime is 164425967. The next prime is 164425991. The reversal of 164425975 is 579524461.

It is not a de Polignac number, because 164425975 - 2³ = 164425967 is a prime.

It is a super-3 number, since 3×164425975³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1771 + ... + 18220.

It is an arithmetic number, because the mean of its divisors is an integer number (9916032).

Almost surely, 2^164425975 is an apocalyptic number.

164425975 is a deficient number, since it is larger than the sum of its proper divisors (73558793).

164425975 is a wasteful number, since it uses less digits than its factorization.

164425975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20055 (or 20050 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 164425975 is about 12822.8692187045. The cubic root of 164425975 is about 547.8438725758.

The spelling of 164425975 in words is "one hundred sixty-four million, four hundred twenty-five thousand, nine hundred seventy-five".