8725918517 has 4 divisors (see below), whose sum is σ = 8726108160. Its totient is φ = 8725728876.

The previous prime is 8725918483. The next prime is 8725918541. The reversal of 8725918517 is 7158195278.

8725918517 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8725918517 - 2¹⁶ = 8725852981 is a prime.

It is a super-2 number, since 2×8725918517² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725998517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22988 + ... + 134090.

It is an arithmetic number, because the mean of its divisors is an integer number (2181527040).

Almost surely, 2^8725918517 is an apocalyptic number.

It is an amenable number.

8725918517 is a deficient number, since it is larger than the sum of its proper divisors (189643).

8725918517 is a wasteful number, since it uses less digits than its factorization.

8725918517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189642.

The product of its digits is 1411200, while the sum is 53.

The square root of 8725918517 is about 93412.6250407299. The cubic root of 8725918517 is about 2058.7505003951.

The spelling of 8725918517 in words is "eight billion, seven hundred twenty-five million, nine hundred eighteen thousand, five hundred seventeen".