164136925 has 24 divisors (see below), whose sum is σ = 209379456. Its totient is φ = 127578240.

The previous prime is 164136913. The next prime is 164136943. The reversal of 164136925 is 529631461.

It is not a de Polignac number, because 164136925 - 2⁵ = 164136893 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 23 ways as a sum of consecutive naturals, for example, 191097 + ... + 191953.

It is an arithmetic number, because the mean of its divisors is an integer number (8724144).

Almost surely, 2^164136925 is an apocalyptic number.

It is an amenable number.

164136925 is a deficient number, since it is larger than the sum of its proper divisors (45242531).

164136925 is a wasteful number, since it uses less digits than its factorization.

164136925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1072 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 164136925 is about 12811.5933825578. The cubic root of 164136925 is about 547.5226598351.

The spelling of 164136925 in words is "one hundred sixty-four million, one hundred thirty-six thousand, nine hundred twenty-five".