265803280255 has 4 divisors (see below), whose sum is σ = 318963936312. Its totient is φ = 212642624200.

The previous prime is 265803280231. The next prime is 265803280271. The reversal of 265803280255 is 552082308562.

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

It is not a de Polignac number, because 265803280255 - 2¹⁵ = 265803247487 is a prime.

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, 26580328021 + ... + 26580328030.

It is an arithmetic number, because the mean of its divisors is an integer number (79740984078).

Almost surely, 2^265803280255 is an apocalyptic number.

265803280255 is a deficient number, since it is larger than the sum of its proper divisors (53160656057).

265803280255 is an equidigital number, since it uses as much as digits as its factorization.

265803280255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53160656056.

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 265803280255 in words is "two hundred sixty-five billion, eight hundred three million, two hundred eighty thousand, two hundred fifty-five".