989566444725 has 48 divisors (see below), whose sum is σ = 1653855313152. Its totient is φ = 522041794560.

The previous prime is 989566444723. The next prime is 989566444771. The reversal of 989566444725 is 527444665989.

989566444725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 989566444725 - 2¹ = 989566444723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989566444725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989566444723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13589764 + ... + 13662386.

It is an arithmetic number, because the mean of its divisors is an integer number (34455319024).

Almost surely, 2^989566444725 is an apocalyptic number.

It is an amenable number.

989566444725 is a deficient number, since it is larger than the sum of its proper divisors (664288868427).

989566444725 is a wasteful number, since it uses less digits than its factorization.

989566444725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74606 (or 74601 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 69.

The spelling of 989566444725 in words is "nine hundred eighty-nine billion, five hundred sixty-six million, four hundred forty-four thousand, seven hundred twenty-five".