325504140 has 144 divisors (see below), whose sum is σ = 1009387008. Its totient is φ = 78304512.

The previous prime is 325504051. The next prime is 325504147. The reversal of 325504140 is 41405523.

It is a self number, because there is not a number n which added to its sum of digits gives 325504140.

It is not an unprimeable number, because it can be changed into a prime (325504147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 476239 + ... + 476921.

It is an arithmetic number, because the mean of its divisors is an integer number (7009632).

Almost surely, 2^325504140 is an apocalyptic number.

325504140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325504140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504693504).

325504140 is an abundant number, since it is smaller than the sum of its proper divisors (683882868).

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

325504140 is a wasteful number, since it uses less digits than its factorization.

325504140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 325504140 is about 18041.7332870210. The cubic root of 325504140 is about 687.8897510153.

Adding to 325504140 its reverse (41405523), we get a palindrome (366909663).

The spelling of 325504140 in words is "three hundred twenty-five million, five hundred four thousand, one hundred forty".