265041665 has 16 divisors (see below), whose sum is σ = 364849920. Its totient is φ = 181060800.

The previous prime is 265041631. The next prime is 265041677. The reversal of 265041665 is 566140562.

265041665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 265041665 - 2⁸ = 265041409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon 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, 4661 + ... + 23490.

It is an arithmetic number, because the mean of its divisors is an integer number (22803120).

Almost surely, 2^265041665 is an apocalyptic number.

It is an amenable number.

265041665 is a deficient number, since it is larger than the sum of its proper divisors (99808255).

265041665 is a wasteful number, since it uses less digits than its factorization.

265041665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28432.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 265041665 is about 16280.1002761040. The cubic root of 265041665 is about 642.3494900972.

The spelling of 265041665 in words is "two hundred sixty-five million, forty-one thousand, six hundred sixty-five".