865305725 has 12 divisors (see below), whose sum is σ = 1078070880. Its totient is φ = 688959600.

The previous prime is 865305703. The next prime is 865305731. The reversal of 865305725 is 527503568.

It is not a de Polignac number, because 865305725 - 2¹⁰ = 865304701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76745 + ... + 87294.

It is an arithmetic number, because the mean of its divisors is an integer number (89839240).

Almost surely, 2^865305725 is an apocalyptic number.

It is an amenable number.

865305725 is a deficient number, since it is larger than the sum of its proper divisors (212765155).

865305725 is a wasteful number, since it uses less digits than its factorization.

865305725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164260 (or 164255 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 865305725 is about 29416.0793614649. The cubic root of 865305725 is about 952.9201834918.

The spelling of 865305725 in words is "eight hundred sixty-five million, three hundred five thousand, seven hundred twenty-five".