9725788800 has 768 divisors, whose sum is σ = 43843027200. Its totient is φ = 2050375680.

The previous prime is 9725788781. The next prime is 9725788817. The reversal of 9725788800 is 88875279.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7861782 + ... + 7863018.

It is an arithmetic number, because the mean of its divisors is an integer number (57087275).

Almost surely, 2^9725788800 is an apocalyptic number.

9725788800 is a gapful number since it is divisible by the number (90) 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 9725788800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21921513600).

9725788800 is an abundant number, since it is smaller than the sum of its proper divisors (34117238400).

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

9725788800 is a wasteful number, since it uses less digits than its factorization.

9725788800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The square root of 9725788800 is about 98619.4139102439. The cubic root of 9725788800 is about 2134.5595641300.

The spelling of 9725788800 in words is "nine billion, seven hundred twenty-five million, seven hundred eighty-eight thousand, eight hundred".