164243325 has 24 divisors (see below), whose sum is σ = 272232576. Its totient is φ = 87376000.

The previous prime is 164243323. The next prime is 164243329. The reversal of 164243325 is 523342461.

It is not a de Polignac number, because 164243325 - 2¹ = 164243323 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 164243292 and 164243301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164243323) 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, 29785 + ... + 34865.

It is an arithmetic number, because the mean of its divisors is an integer number (11343024).

Almost surely, 2^164243325 is an apocalyptic number.

164243325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164243325 is a deficient number, since it is larger than the sum of its proper divisors (107989251).

164243325 is a wasteful number, since it uses less digits than its factorization.

164243325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525 (or 5520 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 164243325 is about 12815.7451987779. The cubic root of 164243325 is about 547.6409428429.

Adding to 164243325 its reverse (523342461), we get a palindrome (687585786).

The spelling of 164243325 in words is "one hundred sixty-four million, two hundred forty-three thousand, three hundred twenty-five".