325909 has 4 divisors (see below), whose sum is σ = 333900. Its totient is φ = 317920.

The previous prime is 325901. The next prime is 325921. The reversal of 325909 is 909523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 909523 = 257 ⋅3539.

It can be written as a sum of positive squares in 2 ways, for example, as 72900 + 253009 = 270^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 325909 - 2³ = 325901 is a prime.

It is a Duffinian number.

325909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3934 + ... + 4015.

It is an arithmetic number, because the mean of its divisors is an integer number (83475).

2³²⁵⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

325909 is a deficient number, since it is larger than the sum of its proper divisors (7991).

325909 is an equidigital number, since it uses as much as digits as its factorization.

325909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7990.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 325909 is about 570.8844016086. The cubic root of 325909 is about 68.8174830502.

The spelling of 325909 in words is "three hundred twenty-five thousand, nine hundred nine".