265113665 has 8 divisors (see below), whose sum is σ = 319270248. Its totient is φ = 211335040.

The previous prime is 265113649. The next prime is 265113671. The reversal of 265113665 is 566311562.

It can be written as a sum of positive squares in 4 ways, for example, as 75968656 + 189145009 = 8716^2 + 13753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 265113665 - 2⁴ = 265113649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92942 + ... + 95751.

It is an arithmetic number, because the mean of its divisors is an integer number (39908781).

Almost surely, 2^265113665 is an apocalyptic number.

It is an amenable number.

265113665 is a deficient number, since it is larger than the sum of its proper divisors (54156583).

265113665 is a wasteful number, since it uses less digits than its factorization.

265113665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188979.

The product of its digits is 32400, while the sum is 35.

The square root of 265113665 is about 16282.3114145382. The cubic root of 265113665 is about 642.4076507339.

The spelling of 265113665 in words is "two hundred sixty-five million, one hundred thirteen thousand, six hundred sixty-five".