265264065 has 60 divisors (see below), whose sum is σ = 522765012. Its totient is φ = 128589120.

The previous prime is 265264061. The next prime is 265264091. The reversal of 265264065 is 560462562.

265264065 is a `hidden beast` number, since 2 + 6 + 5 + 2 + 640 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75898944 + 189365121 = 8712^2 + 13761^2 .

It is not a de Polignac number, because 265264065 - 2² = 265264061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265264061) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 46299 + ... + 51711.

Almost surely, 2^265264065 is an apocalyptic number.

It is an amenable number.

265264065 is a deficient number, since it is larger than the sum of its proper divisors (257500947).

265264065 is a wasteful number, since it uses less digits than its factorization.

265264065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452 (or 5432 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 265264065 is about 16286.9292685884. The cubic root of 265264065 is about 642.5291078780.

The spelling of 265264065 in words is "two hundred sixty-five million, two hundred sixty-four thousand, sixty-five".