4443389964225 has 135 divisors (see below), whose sum is σ = 8315007220377. Its totient is φ = 2345777521920.

The previous prime is 4443389964191. The next prime is 4443389964227. The reversal of 4443389964225 is 5224699833444.

The square root of 4443389964225 is 2107935.

It is a perfect power (a square), and thus also a powerful number.

4443389964225 is a `hidden beast` number, since 4 + 4 + 43 + 3 + 89 + 96 + 422 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 615247278129 + 3828142686096 = 784377^2 + 1956564^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 4443389964225 - 2⁹ = 4443389963713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4443389964227) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 13185133257 + ... + 13185133593.

Almost surely, 2^{4443389964225} is an apocalyptic number.

4443389964225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4443389964225 is the 2107935-th square number.

4443389964225 is the 1053968-th centered octagonal number.

It is an amenable number.

4443389964225 is a deficient number, since it is larger than the sum of its proper divisors (3871617256152).

4443389964225 is an frugal number, since it uses more digits than its factorization.

4443389964225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 484 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 63.

The spelling of 4443389964225 in words is "four trillion, four hundred forty-three billion, three hundred eighty-nine million, nine hundred sixty-four thousand, two hundred twenty-five".