20253524720 has 320 divisors, whose sum is σ = 57851297280. Its totient is φ = 6494515200.

The previous prime is 20253524699. The next prime is 20253524723. The reversal of 20253524720 is 2742535202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253524723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24973115 + ... + 24973925.

It is an arithmetic number, because the mean of its divisors is an integer number (180785304).

Almost surely, 2^20253524720 is an apocalyptic number.

20253524720 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 20253524720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28925648640).

20253524720 is an abundant number, since it is smaller than the sum of its proper divisors (37597772560).

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

20253524720 is a wasteful number, since it uses less digits than its factorization.

20253524720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 32.

The spelling of 20253524720 in words is "twenty billion, two hundred fifty-three million, five hundred twenty-four thousand, seven hundred twenty".