265015040 has 144 divisors (see below), whose sum is σ = 708613920. Its totient is φ = 94371840.

The previous prime is 265015031. The next prime is 265015061. The reversal of 265015040 is 40510562.

It is a junction number, because it is equal to n+sod(n) for n = 265014997 and 265015015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413120 + ... + 413760.

It is an arithmetic number, because the mean of its divisors is an integer number (4920930).

Almost surely, 2^265015040 is an apocalyptic number.

265015040 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 265015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354306960).

265015040 is an abundant number, since it is smaller than the sum of its proper divisors (443598880).

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

265015040 is a wasteful number, since it uses less digits than its factorization.

265015040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 265015040 is about 16279.2825394733. The cubic root of 265015040 is about 642.3279801107.

The spelling of 265015040 in words is "two hundred sixty-five million, fifteen thousand, forty".