320025050500 has 144 divisors (see below), whose sum is σ = 721216497456. Its totient is φ = 124010764800.

The previous prime is 320025050489. The next prime is 320025050531. The reversal of 320025050500 is 5050520023.

It can be written as a sum of positive squares in 8 ways, for example, as 164461069444 + 155563981056 = 405538^2 + 394416^2 .

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, 182557624 + ... + 182559376.

It is an arithmetic number, because the mean of its divisors is an integer number (5008447899).

Almost surely, 2^320025050500 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 320025050500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360608248728).

320025050500 is an abundant number, since it is smaller than the sum of its proper divisors (401191446956).

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

320025050500 is a wasteful number, since it uses less digits than its factorization.

320025050500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

Adding to 320025050500 its reverse (5050520023), we get a palindrome (325075570523).

The spelling of 320025050500 in words is "three hundred twenty billion, twenty-five million, fifty thousand, five hundred".