265245647 has 2 divisors, whose sum is σ = 265245648. Its totient is φ = 265245646.

The previous prime is 265245587. The next prime is 265245667. The reversal of 265245647 is 746542562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265245647 - 2⁸ = 265245391 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 (265245667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132622823 + 132622824.

It is an arithmetic number, because the mean of its divisors is an integer number (132622824).

Almost surely, 2^265245647 is an apocalyptic number.

265245647 is a deficient number, since it is larger than the sum of its proper divisors (1).

265245647 is an equidigital number, since it uses as much as digits as its factorization.

265245647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 41.

The square root of 265245647 is about 16286.3638360439. The cubic root of 265245647 is about 642.5142366904.

The spelling of 265245647 in words is "two hundred sixty-five million, two hundred forty-five thousand, six hundred forty-seven".