9888843825 has 96 divisors (see below), whose sum is σ = 20790097920. Its totient is φ = 4514356800.

The previous prime is 9888843821. The next prime is 9888843863. The reversal of 9888843825 is 5283488889.

It is not a de Polignac number, because 9888843825 - 2² = 9888843821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9888843821) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6458310 + ... + 6459840.

It is an arithmetic number, because the mean of its divisors is an integer number (216563520).

Almost surely, 2^9888843825 is an apocalyptic number.

It is an amenable number.

9888843825 is an abundant number, since it is smaller than the sum of its proper divisors (10901254095).

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

9888843825 is a wasteful number, since it uses less digits than its factorization.

9888843825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924 (or 2913 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 63.

The square root of 9888843825 is about 99442.6660191691. Note that the first 3 decimals coincide. The cubic root of 9888843825 is about 2146.4223047715.

The spelling of 9888843825 in words is "nine billion, eight hundred eighty-eight million, eight hundred forty-three thousand, eight hundred twenty-five".