265235211221065 has 8 divisors (see below), whose sum is σ = 318283221634560. Its totient is φ = 212187523530672.

The previous prime is 265235211221041. The next prime is 265235211221161. The reversal of 265235211221065 is 560122112532562.

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

It is a cyclic number.

It is not a de Polignac number, because 265235211221065 - 2¹⁷ = 265235211089993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78868969 + ... + 82163158.

It is an arithmetic number, because the mean of its divisors is an integer number (39785402704320).

Almost surely, 2^{265235211221065} is an apocalyptic number.

It is an amenable number.

265235211221065 is a deficient number, since it is larger than the sum of its proper divisors (53048010413495).

265235211221065 is a wasteful number, since it uses less digits than its factorization.

265235211221065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161361551.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 265235211221065 in words is "two hundred sixty-five trillion, two hundred thirty-five billion, two hundred eleven million, two hundred twenty-one thousand, sixty-five".