8725685 has 4 divisors (see below), whose sum is σ = 10470828. Its totient is φ = 6980544.

The previous prime is 8725681. The next prime is 8725699. The reversal of 8725685 is 5865278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3352561 + 5373124 = 1831^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 8725685 - 2² = 8725681 is a prime.

It is a super-2 number, since 2×8725685² = 152275157438450, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725681) 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, 872564 + ... + 872573.

It is an arithmetic number, because the mean of its divisors is an integer number (2617707).

Almost surely, 2^8725685 is an apocalyptic number.

It is an amenable number.

8725685 is a deficient number, since it is larger than the sum of its proper divisors (1745143).

8725685 is a wasteful number, since it uses less digits than its factorization.

8725685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745142.

The product of its digits is 134400, while the sum is 41.

The square root of 8725685 is about 2953.9270471696. The cubic root of 8725685 is about 205.8732135279.

The spelling of 8725685 in words is "eight million, seven hundred twenty-five thousand, six hundred eighty-five".