325509 has 4 divisors (see below), whose sum is σ = 434016. Its totient is φ = 217004.

The previous prime is 325487. The next prime is 325513. The reversal of 325509 is 905523.

325509 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

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: 905523 = 3 ⋅301841.

It is a cyclic number.

It is not a de Polignac number, because 325509 - 2⁵ = 325477 is a prime.

It is a super-2 number, since 2×325509² = 211912218162, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

325509 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 325509.

It is not an unprimeable number, because it can be changed into a prime (325009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54249 + ... + 54254.

It is an arithmetic number, because the mean of its divisors is an integer number (108504).

2³²⁵⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

325509 is a deficient number, since it is larger than the sum of its proper divisors (108507).

325509 is a wasteful number, since it uses less digits than its factorization.

325509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108506.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 325509 is about 570.5339604265. The cubic root of 325509 is about 68.7893174553.

The spelling of 325509 in words is "three hundred twenty-five thousand, five hundred nine".