325221424 has 80 divisors (see below), whose sum is σ = 738300960. Its totient is φ = 137134080.

The previous prime is 325221353. The next prime is 325221437. The reversal of 325221424 is 424122523.

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 15 ways as a sum of consecutive naturals, for example, 217672 + ... + 219160.

It is an arithmetic number, because the mean of its divisors is an integer number (9228762).

Almost surely, 2^325221424 is an apocalyptic number.

325221424 is a gapful number since it is divisible by the number (34) 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 325221424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369150480).

325221424 is an abundant number, since it is smaller than the sum of its proper divisors (413079536).

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

325221424 is a wasteful number, since it uses less digits than its factorization.

325221424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 1592 counting only the distinct ones).

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

The square root of 325221424 is about 18033.8965284821. The cubic root of 325221424 is about 687.6905382184.

Adding to 325221424 its reverse (424122523), we get a palindrome (749343947).

The spelling of 325221424 in words is "three hundred twenty-five million, two hundred twenty-one thousand, four hundred twenty-four".