265117013 has 16 divisors (see below), whose sum is σ = 319587840. Its totient is φ = 214844400.

The previous prime is 265116979. The next prime is 265117033. The reversal of 265117013 is 310711562.

It is not a de Polignac number, because 265117013 - 2⁶ = 265116949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265117033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74198 + ... + 77688.

It is an arithmetic number, because the mean of its divisors is an integer number (19974240).

Almost surely, 2^265117013 is an apocalyptic number.

It is an amenable number.

265117013 is a deficient number, since it is larger than the sum of its proper divisors (54470827).

265117013 is a wasteful number, since it uses less digits than its factorization.

265117013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 265117013 is about 16282.4142251694. The cubic root of 265117013 is about 642.4103549473.

Adding to 265117013 its reverse (310711562), we get a palindrome (575828575).

The spelling of 265117013 in words is "two hundred sixty-five million, one hundred seventeen thousand, thirteen".