265064257 has 2 divisors, whose sum is σ = 265064258. Its totient is φ = 265064256.

The previous prime is 265064203. The next prime is 265064273. The reversal of 265064257 is 752460562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255968001 + 9096256 = 15999^2 + 3016^2 .

It is a cyclic number.

It is not a de Polignac number, because 265064257 - 2²³ = 256675649 is a prime.

It is not a weakly prime, because it can be changed into another prime (265064557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132532128 + 132532129.

It is an arithmetic number, because the mean of its divisors is an integer number (132532129).

Almost surely, 2^265064257 is an apocalyptic number.

It is an amenable number.

265064257 is a deficient number, since it is larger than the sum of its proper divisors (1).

265064257 is an equidigital number, since it uses as much as digits as its factorization.

265064257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 265064257 is about 16280.7941145388. The cubic root of 265064257 is about 642.3677407464.

The spelling of 265064257 in words is "two hundred sixty-five million, sixty-four thousand, two hundred fifty-seven".