164045625 has 20 divisors (see below), whose sum is σ = 273325008. Its totient is φ = 87490000.

The previous prime is 164045621. The next prime is 164045641. The reversal of 164045625 is 526540461.

164045625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164045625 - 2² = 164045621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164045621) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41871 + ... + 45620.

Almost surely, 2^164045625 is an apocalyptic number.

164045625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164045625 is a deficient number, since it is larger than the sum of its proper divisors (109279383).

164045625 is an frugal number, since it uses more digits than its factorization.

164045625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87514 (or 87499 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 164045625 is about 12808.0297079605. The cubic root of 164045625 is about 547.4211224747.

The spelling of 164045625 in words is "one hundred sixty-four million, forty-five thousand, six hundred twenty-five".