164149825 has 24 divisors (see below), whose sum is σ = 233120000. Its totient is φ = 112320000.

The previous prime is 164149823. The next prime is 164149861. The reversal of 164149825 is 528941461.

It is not a de Polignac number, because 164149825 - 2¹ = 164149823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164149823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130801 + ... + 132049.

Almost surely, 2^164149825 is an apocalyptic number.

It is an amenable number.

164149825 is a deficient number, since it is larger than the sum of its proper divisors (68970175).

164149825 is a wasteful number, since it uses less digits than its factorization.

164149825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2012 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 164149825 is about 12812.0968229248. The cubic root of 164149825 is about 547.5370032607.

The spelling of 164149825 in words is "one hundred sixty-four million, one hundred forty-nine thousand, eight hundred twenty-five".