265135604005 has 4 divisors (see below), whose sum is σ = 318162724812. Its totient is φ = 212108483200.

The previous prime is 265135603939. The next prime is 265135604021. The reversal of 265135604005 is 500406531562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87748065729 + 177387538276 = 296223^2 + 421174^2 .

It is a de Polignac number, because none of the positive numbers 2^k-265135604005 is a prime.

It is a super-2 number, since 2×265135604005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26513560396 + ... + 26513560405.

It is an arithmetic number, because the mean of its divisors is an integer number (79540681203).

Almost surely, 2^265135604005 is an apocalyptic number.

It is an amenable number.

265135604005 is a deficient number, since it is larger than the sum of its proper divisors (53027120807).

265135604005 is an equidigital number, since it uses as much as digits as its factorization.

265135604005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53027120806.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 265135604005 in words is "two hundred sixty-five billion, one hundred thirty-five million, six hundred four thousand, five".