265755725665 has 24 divisors (see below), whose sum is σ = 338942736000. Its totient is φ = 199996155648.

The previous prime is 265755725657. The next prime is 265755725693. The reversal of 265755725665 is 566527557562.

265755725665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 265755725665 - 2³ = 265755725657 is a prime.

It is a super-2 number, since 2×265755725665² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2842554 + ... + 2934556.

It is an arithmetic number, because the mean of its divisors is an integer number (14122614000).

Almost surely, 2^265755725665 is an apocalyptic number.

It is an amenable number.

265755725665 is a deficient number, since it is larger than the sum of its proper divisors (73187010335).

265755725665 is a wasteful number, since it uses less digits than its factorization.

265755725665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94041 (or 94024 counting only the distinct ones).

The product of its digits is 132300000, while the sum is 61.

The spelling of 265755725665 in words is "two hundred sixty-five billion, seven hundred fifty-five million, seven hundred twenty-five thousand, six hundred sixty-five".