265265440 has 96 divisors (see below), whose sum is σ = 713494656. Its totient is φ = 92252160.

The previous prime is 265265431. The next prime is 265265447. The reversal of 265265440 is 44562562.

265265440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 265265396 and 265265405.

It is not an unprimeable number, because it can be changed into a prime (265265447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37204 + ... + 43756.

It is an arithmetic number, because the mean of its divisors is an integer number (7432236).

Almost surely, 2^265265440 is an apocalyptic number.

265265440 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 265265440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356747328).

265265440 is an abundant number, since it is smaller than the sum of its proper divisors (448229216).

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

265265440 is a wasteful number, since it uses less digits than its factorization.

265265440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602 (or 6594 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 265265440 is about 16286.9714802968. The cubic root of 265265440 is about 642.5302180623.

The spelling of 265265440 in words is "two hundred sixty-five million, two hundred sixty-five thousand, four hundred forty".