265217263 has 4 divisors (see below), whose sum is σ = 265830208. Its totient is φ = 264604320.

The previous prime is 265217261. The next prime is 265217269. The reversal of 265217263 is 362712562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 265217263 - 2¹ = 265217261 is a prime.

It is a super-2 number, since 2×265217263² = 140680393186422338, which contains 22 as substring.

It is a Duffinian number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305823 + ... + 306688.

It is an arithmetic number, because the mean of its divisors is an integer number (66457552).

Almost surely, 2^265217263 is an apocalyptic number.

265217263 is a deficient number, since it is larger than the sum of its proper divisors (612945).

265217263 is an equidigital number, since it uses as much as digits as its factorization.

265217263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612944.

The product of its digits is 30240, while the sum is 34.

The square root of 265217263 is about 16285.4924088896. The cubic root of 265217263 is about 642.4913173389.

The spelling of 265217263 in words is "two hundred sixty-five million, two hundred seventeen thousand, two hundred sixty-three".