265165223 has 2 divisors, whose sum is σ = 265165224. Its totient is φ = 265165222.

The previous prime is 265165213. The next prime is 265165237. The reversal of 265165223 is 322561562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265165223 - 2¹⁰ = 265164199 is a prime.

It is a super-3 number, since 3×265165223³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265165223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265165213) 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 as a sum of consecutive naturals, namely, 132582611 + 132582612.

It is an arithmetic number, because the mean of its divisors is an integer number (132582612).

Almost surely, 2^265165223 is an apocalyptic number.

265165223 is a deficient number, since it is larger than the sum of its proper divisors (1).

265165223 is an equidigital number, since it uses as much as digits as its factorization.

265165223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 265165223 is about 16283.8945894402. The cubic root of 265165223 is about 642.4492921267.

The spelling of 265165223 in words is "two hundred sixty-five million, one hundred sixty-five thousand, two hundred twenty-three".