164187925 has 18 divisors (see below), whose sum is σ = 223788194. Its totient is φ = 119407200.

The previous prime is 164187901. The next prime is 164187941. The reversal of 164187925 is 529781461.

164187925 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 527076 + 163660849 = 726^2 + 12793^2 .

It is not a de Polignac number, because 164187925 - 2²⁷ = 29970197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24114 + ... + 30163.

Almost surely, 2^164187925 is an apocalyptic number.

It is an amenable number.

164187925 is a deficient number, since it is larger than the sum of its proper divisors (59600269).

164187925 is a wasteful number, since it uses less digits than its factorization.

164187925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54309 (or 54293 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 164187925 is about 12813.5836127135. The cubic root of 164187925 is about 547.5793620144.

The spelling of 164187925 in words is "one hundred sixty-four million, one hundred eighty-seven thousand, nine hundred twenty-five".