20522502500 has 180 divisors, whose sum is σ = 47769946224. Its totient is φ = 7707504000.

The previous prime is 20522502463. The next prime is 20522502503. The reversal of 20522502500 is 520522502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20522502503) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 90407387 + ... + 90407613.

Almost surely, 2^20522502500 is an apocalyptic number.

20522502500 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 20522502500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23884973112).

20522502500 is an abundant number, since it is smaller than the sum of its proper divisors (27247443724).

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

20522502500 is a wasteful number, since it uses less digits than its factorization.

20522502500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The spelling of 20522502500 in words is "twenty billion, five hundred twenty-two million, five hundred two thousand, five hundred".