325404220500 has 144 divisors (see below), whose sum is σ = 1026814226256. Its totient is φ = 86751436800.

The previous prime is 325404220433. The next prime is 325404220517. The reversal of 325404220500 is 5022404523.

It is a happy number.

325404220500 is a `hidden beast` number, since 32 + 5 + 404 + 220 + 5 + 0 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 153700066116 + 171704154384 = 392046^2 + 414372^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23181484 + ... + 23195516.

It is an arithmetic number, because the mean of its divisors is an integer number (7130654349).

Almost surely, 2^325404220500 is an apocalyptic number.

325404220500 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 325404220500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513407113128).

325404220500 is an abundant number, since it is smaller than the sum of its proper divisors (701410005756).

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

325404220500 is a wasteful number, since it uses less digits than its factorization.

325404220500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211 (or 19196 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The spelling of 325404220500 in words is "three hundred twenty-five billion, four hundred four million, two hundred twenty thousand, five hundred".