20825722320 has 320 divisors, whose sum is σ = 72242876160. Its totient is φ = 4929306624.

The previous prime is 20825722319. The next prime is 20825722367. The reversal of 20825722320 is 2322752802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10273147 + ... + 10275173.

It is an arithmetic number, because the mean of its divisors is an integer number (225758988).

Almost surely, 2^20825722320 is an apocalyptic number.

20825722320 is a gapful number since it is divisible by the number (20) 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 20825722320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36121438080).

20825722320 is an abundant number, since it is smaller than the sum of its proper divisors (51417153840).

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

20825722320 is a wasteful number, since it uses less digits than its factorization.

20825722320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The spelling of 20825722320 in words is "twenty billion, eight hundred twenty-five million, seven hundred twenty-two thousand, three hundred twenty".