325223646 has 64 divisors (see below), whose sum is σ = 750919680. Its totient is φ = 92867040.

The previous prime is 325223629. The next prime is 325223653. The reversal of 325223646 is 646322523.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279061 + ... + 280223.

It is an arithmetic number, because the mean of its divisors is an integer number (11733120).

Almost surely, 2^325223646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325223646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375459840).

325223646 is an abundant number, since it is smaller than the sum of its proper divisors (425696034).

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

325223646 is a wasteful number, since it uses less digits than its factorization.

325223646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its digits is 51840, while the sum is 33.

The square root of 325223646 is about 18033.9581345860. The cubic root of 325223646 is about 687.6921043769.

The spelling of 325223646 in words is "three hundred twenty-five million, two hundred twenty-three thousand, six hundred forty-six".