265216512 has 120 divisors (see below), whose sum is σ = 777169008. Its totient is φ = 80312320.

The previous prime is 265216499. The next prime is 265216517. The reversal of 265216512 is 215612562.

It is a super-2 number, since 2×265216512² = 140679596474892288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 265216512.

It is not an unprimeable number, because it can be changed into a prime (265216517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185143 + ... + 186569.

Almost surely, 2^265216512 is an apocalyptic number.

265216512 is a gapful number since it is divisible by the number (22) 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 265216512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388584504).

265216512 is an abundant number, since it is smaller than the sum of its proper divisors (511952496).

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

265216512 is a wasteful number, since it uses less digits than its factorization.

265216512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470 (or 1443 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 265216512 is about 16285.4693515416. The cubic root of 265216512 is about 642.4907109035.

It can be divided in two parts, 26521 and 6512, that added together give a palindrome (33033).

The spelling of 265216512 in words is "two hundred sixty-five million, two hundred sixteen thousand, five hundred twelve".