20522234500 has 96 divisors (see below), whose sum is σ = 45642621024. Its totient is φ = 8059392000.

The previous prime is 20522234459. The next prime is 20522234507. The reversal of 20522234500 is 543222502.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 12840062596 + 7682171904 = 113314^2 + 87648^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20522234507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8795334 + ... + 8797666.

It is an arithmetic number, because the mean of its divisors is an integer number (475443969).

Almost surely, 2^20522234500 is an apocalyptic number.

20522234500 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 20522234500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22821310512).

20522234500 is an abundant number, since it is smaller than the sum of its proper divisors (25120386524).

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

20522234500 is a wasteful number, since it uses less digits than its factorization.

20522234500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 20522234500 in words is "twenty billion, five hundred twenty-two million, two hundred thirty-four thousand, five hundred".