265572240 has 80 divisors (see below), whose sum is σ = 829851648. Its totient is φ = 70253568.

The previous prime is 265572233. The next prime is 265572269. The reversal of 265572240 is 42275562.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×265572240² = 141057229317235200, which contains 22 as substring.

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, 26124 + ... + 34836.

Almost surely, 2^265572240 is an apocalyptic number.

265572240 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 265572240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414925824).

265572240 is an abundant number, since it is smaller than the sum of its proper divisors (564279408).

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

265572240 is a wasteful number, since it uses less digits than its factorization.

265572240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856 (or 8850 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 265572240 is about 16296.3873297121. The cubic root of 265572240 is about 642.7778345902. Note that the first 3 decimals are identical.

The spelling of 265572240 in words is "two hundred sixty-five million, five hundred seventy-two thousand, two hundred forty".