265257313 has 2 divisors, whose sum is σ = 265257314. Its totient is φ = 265257312.

The previous prime is 265257299. The next prime is 265257323. The reversal of 265257313 is 313752562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244390689 + 20866624 = 15633^2 + 4568^2 .

It is a cyclic number.

It is not a de Polignac number, because 265257313 - 2¹³ = 265249121 is a prime.

It is a super-2 number, since 2×265257313² = 140722884199959938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265257323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132628656 + 132628657.

It is an arithmetic number, because the mean of its divisors is an integer number (132628657).

Almost surely, 2^265257313 is an apocalyptic number.

It is an amenable number.

265257313 is a deficient number, since it is larger than the sum of its proper divisors (1).

265257313 is an equidigital number, since it uses as much as digits as its factorization.

265257313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 265257313 is about 16286.7219844879. The cubic root of 265257313 is about 642.5236562119.

The spelling of 265257313 in words is "two hundred sixty-five million, two hundred fifty-seven thousand, three hundred thirteen".