265316985 has 32 divisors (see below), whose sum is σ = 478730880. Its totient is φ = 139385664.

The previous prime is 265316963. The next prime is 265317023. The reversal of 265316985 is 589613562.

265316985 is a `hidden beast` number, since 26 + 531 + 6 + 98 + 5 = 666.

It is not a de Polignac number, because 265316985 - 2⁹ = 265316473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 265316985.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5622 + ... + 23711.

It is an arithmetic number, because the mean of its divisors is an integer number (14960340).

Almost surely, 2^265316985 is an apocalyptic number.

It is an amenable number.

265316985 is a deficient number, since it is larger than the sum of its proper divisors (213413895).

265316985 is a wasteful number, since it uses less digits than its factorization.

265316985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29414 (or 29408 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 265316985 is about 16288.5538032079. The cubic root of 265316985 is about 642.5718330765.

The spelling of 265316985 in words is "two hundred sixty-five million, three hundred sixteen thousand, nine hundred eighty-five".