265416287 has 2 divisors, whose sum is σ = 265416288. Its totient is φ = 265416286.

The previous prime is 265416259. The next prime is 265416337. The reversal of 265416287 is 782614562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265416287 - 2⁸ = 265416031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265415287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132708143 + 132708144.

It is an arithmetic number, because the mean of its divisors is an integer number (132708144).

Almost surely, 2^265416287 is an apocalyptic number.

265416287 is a deficient number, since it is larger than the sum of its proper divisors (1).

265416287 is an equidigital number, since it uses as much as digits as its factorization.

265416287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The square root of 265416287 is about 16291.6017321809. The cubic root of 265416287 is about 642.6519896599.

The spelling of 265416287 in words is "two hundred sixty-five million, four hundred sixteen thousand, two hundred eighty-seven".