265251086080 has 144 divisors (see below), whose sum is σ = 646954207200. Its totient is φ = 104198750208.

The previous prime is 265251086047. The next prime is 265251086099. The reversal of 265251086080 is 80680152562.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262884616 + ... + 262885624.

It is an arithmetic number, because the mean of its divisors is an integer number (4492737550).

Almost surely, 2^265251086080 is an apocalyptic number.

265251086080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265251086080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323477103600).

265251086080 is an abundant number, since it is smaller than the sum of its proper divisors (381703121120).

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

265251086080 is an frugal number, since it uses more digits than its factorization.

265251086080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 265251086080 in words is "two hundred sixty-five billion, two hundred fifty-one million, eighty-six thousand, eighty".