8659489725 has 36 divisors (see below), whose sum is σ = 15628559232. Its totient is φ = 4583124000.

The previous prime is 8659489721. The next prime is 8659489739. The reversal of 8659489725 is 5279849568.

8659489725 is a `hidden beast` number, since 86 + 5 + 9 + 489 + 72 + 5 = 666.

It is not a de Polignac number, because 8659489725 - 2² = 8659489721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8659489721) 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, 117421 + ... + 176370.

Almost surely, 2^8659489725 is an apocalyptic number.

It is an amenable number.

8659489725 is a deficient number, since it is larger than the sum of its proper divisors (6969069507).

8659489725 is a wasteful number, since it uses less digits than its factorization.

8659489725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293938 (or 293930 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The square root of 8659489725 is about 93056.3792815947. The cubic root of 8659489725 is about 2053.5128921768.

The spelling of 8659489725 in words is "eight billion, six hundred fifty-nine million, four hundred eighty-nine thousand, seven hundred twenty-five".