8644725 has 36 divisors (see below), whose sum is σ = 16068416. Its totient is φ = 4607280.

The previous prime is 8644723. The next prime is 8644729. The reversal of 8644725 is 5274468.

8644725 is a `hidden beast` number, since 8 + 644 + 7 + 2 + 5 = 666.

8644725 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8644725 - 2¹ = 8644723 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8644725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5364 + ... + 6786.

Almost surely, 2^8644725 is an apocalyptic number.

It is an amenable number.

8644725 is a deficient number, since it is larger than the sum of its proper divisors (7423691).

8644725 is a wasteful number, since it uses less digits than its factorization.

8644725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1431 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 8644725 is about 2940.1913203055. The cubic root of 8644725 is about 205.2345125084.

The spelling of 8644725 in words is "eight million, six hundred forty-four thousand, seven hundred twenty-five".