20535250120 has 256 divisors, whose sum is σ = 59444305920. Its totient is φ = 6197990400.

The previous prime is 20535250091. The next prime is 20535250121. The reversal of 20535250120 is 2105253502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20535250121) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 41823075 + ... + 41823565.

It is an arithmetic number, because the mean of its divisors is an integer number (232204320).

Almost surely, 2^20535250120 is an apocalyptic number.

20535250120 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 20535250120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29722152960).

20535250120 is an abundant number, since it is smaller than the sum of its proper divisors (38909055800).

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

20535250120 is a wasteful number, since it uses less digits than its factorization.

20535250120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 20535250120 in words is "twenty billion, five hundred thirty-five million, two hundred fifty thousand, one hundred twenty".