265488668256 has 192 divisors, whose sum is σ = 835221542400. Its totient is φ = 72234602496.

The previous prime is 265488668213. The next prime is 265488668287. The reversal of 265488668256 is 652866884562.

265488668256 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1329315 + ... + 1515933.

It is an arithmetic number, because the mean of its divisors is an integer number (4350112200).

Almost surely, 2^265488668256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265488668256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417610771200).

265488668256 is an abundant number, since it is smaller than the sum of its proper divisors (569732874144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265488668256 is a wasteful number, since it uses less digits than its factorization.

265488668256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186741 (or 186733 counting only the distinct ones).

The product of its digits is 265420800, while the sum is 66.

The spelling of 265488668256 in words is "two hundred sixty-five billion, four hundred eighty-eight million, six hundred sixty-eight thousand, two hundred fifty-six".