265321985 has 8 divisors (see below), whose sum is σ = 335143680. Its totient is φ = 201086064.

The previous prime is 265321939. The next prime is 265322017. The reversal of 265321985 is 589123562.

265321985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265321985 - 2¹⁰ = 265320961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1396337 + ... + 1396526.

It is an arithmetic number, because the mean of its divisors is an integer number (41892960).

Almost surely, 2^265321985 is an apocalyptic number.

It is an amenable number.

265321985 is a deficient number, since it is larger than the sum of its proper divisors (69821695).

265321985 is a wasteful number, since it uses less digits than its factorization.

265321985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792887.

The product of its digits is 129600, while the sum is 41.

The square root of 265321985 is about 16288.7072844962. The cubic root of 265321985 is about 642.5758695550.

The spelling of 265321985 in words is "two hundred sixty-five million, three hundred twenty-one thousand, nine hundred eighty-five".