325640 has 32 divisors (see below), whose sum is σ = 838080. Its totient is φ = 111552.

The previous prime is 325631. The next prime is 325643. The reversal of 325640 is 46523.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 325640.

It is not an unprimeable number, because it can be changed into a prime (325643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302 + ... + 861.

It is an arithmetic number, because the mean of its divisors is an integer number (26190).

2³²⁵⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

325640 is an abundant number, since it is smaller than the sum of its proper divisors (512440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325640 is a wasteful number, since it uses less digits than its factorization.

325640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 325640 is about 570.6487536129. The cubic root of 325640 is about 68.7985442274.

The spelling of 325640 in words is "three hundred twenty-five thousand, six hundred forty".