265416259 has 2 divisors, whose sum is σ = 265416260. Its totient is φ = 265416258.

The previous prime is 265416241. The next prime is 265416287. The reversal of 265416259 is 952614562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265416259 - 2⁷ = 265416131 is a prime.

It is not a weakly prime, because it can be changed into another prime (265416859) 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, 132708129 + 132708130.

It is an arithmetic number, because the mean of its divisors is an integer number (132708130).

Almost surely, 2^265416259 is an apocalyptic number.

265416259 is a deficient number, since it is larger than the sum of its proper divisors (1).

265416259 is an equidigital number, since it uses as much as digits as its factorization.

265416259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 265416259 is about 16291.6008728424. The cubic root of 265416259 is about 642.6519670611.

The spelling of 265416259 in words is "two hundred sixty-five million, four hundred sixteen thousand, two hundred fifty-nine".