265217264 has 40 divisors (see below), whose sum is σ = 562484832. Its totient is φ = 120395520.

The previous prime is 265217261. The next prime is 265217269. The reversal of 265217264 is 462712562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265217261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2237 + ... + 23139.

Almost surely, 2^265217264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265217264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281242416).

265217264 is an abundant number, since it is smaller than the sum of its proper divisors (297267568).

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

265217264 is a wasteful number, since it uses less digits than its factorization.

265217264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20985 (or 20979 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 265217264 is about 16285.4924395917. The cubic root of 265217264 is about 642.4913181464.

The spelling of 265217264 in words is "two hundred sixty-five million, two hundred seventeen thousand, two hundred sixty-four".