325865209 has 4 divisors (see below), whose sum is σ = 326716416. Its totient is φ = 325014004.

The previous prime is 325865207. The next prime is 325865213. The reversal of 325865209 is 902568523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 902568523 = 19231 ⋅46933.

It is a cyclic number.

It is not a de Polignac number, because 325865209 - 2¹ = 325865207 is a prime.

It is a super-2 number, since 2×325865209² = 212376268873227362, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325865203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425029 + ... + 425794.

It is an arithmetic number, because the mean of its divisors is an integer number (81679104).

Almost surely, 2^325865209 is an apocalyptic number.

It is an amenable number.

325865209 is a deficient number, since it is larger than the sum of its proper divisors (851207).

325865209 is an equidigital number, since it uses as much as digits as its factorization.

325865209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851206.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 325865209 is about 18051.7370078339. The cubic root of 325865209 is about 688.1440067505.

The spelling of 325865209 in words is "three hundred twenty-five million, eight hundred sixty-five thousand, two hundred nine".