265020240 has 160 divisors (see below), whose sum is σ = 857088000. Its totient is φ = 67668480.

The previous prime is 265020221. The next prime is 265020247. The reversal of 265020240 is 42020562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265020247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1331661 + ... + 1331859.

It is an arithmetic number, because the mean of its divisors is an integer number (5356800).

Almost surely, 2^265020240 is an apocalyptic number.

265020240 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 265020240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428544000).

265020240 is an abundant number, since it is smaller than the sum of its proper divisors (592067760).

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

265020240 is a wasteful number, since it uses less digits than its factorization.

265020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 265020240 is about 16279.4422508881. The cubic root of 265020240 is about 642.3321812354.

The spelling of 265020240 in words is "two hundred sixty-five million, twenty thousand, two hundred forty".