265520740 has 24 divisors (see below), whose sum is σ = 581837760. Its totient is φ = 101590368.

The previous prime is 265520711. The next prime is 265520741. The reversal of 265520740 is 47025562.

It is not an unprimeable number, because it can be changed into a prime (265520741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288150 + ... + 289069.

It is an arithmetic number, because the mean of its divisors is an integer number (24243240).

Almost surely, 2^265520740 is an apocalyptic number.

265520740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265520740 is an abundant number, since it is smaller than the sum of its proper divisors (316317020).

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

265520740 is a wasteful number, since it uses less digits than its factorization.

265520740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577251 (or 577249 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 265520740 is about 16294.8071482911. The cubic root of 265520740 is about 642.7362825583.

The spelling of 265520740 in words is "two hundred sixty-five million, five hundred twenty thousand, seven hundred forty".