265512240 has 240 divisors, whose sum is σ = 1029100800. Its totient is φ = 60092928.

The previous prime is 265512227. The next prime is 265512257. The reversal of 265512240 is 42215562.

265512240 is a `hidden beast` number, since 2 + 655 + 1 + 2 + 2 + 4 + 0 = 666.

265512240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 700371 + ... + 700749.

It is an arithmetic number, because the mean of its divisors is an integer number (4287920).

Almost surely, 2^265512240 is an apocalyptic number.

265512240 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 265512240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514550400).

265512240 is an abundant number, since it is smaller than the sum of its proper divisors (763588560).

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

265512240 is a wasteful number, since it uses less digits than its factorization.

265512240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 265512240 is about 16294.5463269156. The cubic root of 265512240 is about 642.7294239394.

The spelling of 265512240 in words is "two hundred sixty-five million, five hundred twelve thousand, two hundred forty".