265031065 has 16 divisors (see below), whose sum is σ = 343089936. Its totient is φ = 195379200.

The previous prime is 265031023. The next prime is 265031077. The reversal of 265031065 is 560130562.

It can be written as a sum of positive squares in 8 ways, for example, as 7139584 + 257891481 = 2672^2 + 16059^2 .

It is not a de Polignac number, because 265031065 - 2¹⁹ = 264506777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38485 + ... + 44845.

It is an arithmetic number, because the mean of its divisors is an integer number (21443121).

Almost surely, 2^265031065 is an apocalyptic number.

It is an amenable number.

265031065 is a deficient number, since it is larger than the sum of its proper divisors (78058871).

265031065 is a wasteful number, since it uses less digits than its factorization.

265031065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 265031065 is about 16279.7747220286. The cubic root of 265031065 is about 642.3409266695.

The spelling of 265031065 in words is "two hundred sixty-five million, thirty-one thousand, sixty-five".