325142440 has 96 divisors (see below), whose sum is σ = 895903200. Its totient is φ = 105598080.

The previous prime is 325142407. The next prime is 325142453. The reversal of 325142440 is 44241523.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32875 + ... + 41605.

It is an arithmetic number, because the mean of its divisors is an integer number (9332325).

Almost surely, 2^325142440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325142440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447951600).

325142440 is an abundant number, since it is smaller than the sum of its proper divisors (570760760).

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

325142440 is a wasteful number, since it uses less digits than its factorization.

325142440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775 (or 8764 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 325142440 is about 18031.7065193509. The cubic root of 325142440 is about 687.6348623586.

Adding to 325142440 its reverse (44241523), we get a palindrome (369383963).

The spelling of 325142440 in words is "three hundred twenty-five million, one hundred forty-two thousand, four hundred forty".