265615313 has 2 divisors, whose sum is σ = 265615314. Its totient is φ = 265615312.

The previous prime is 265615303. The next prime is 265615319. The reversal of 265615313 is 313516562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265592209 + 23104 = 16297^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 265615313 - 2¹⁸ = 265353169 is a prime.

It is equal to p_14485703 and since 265615313 and 14485703 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265615313.

It is not a weakly prime, because it can be changed into another prime (265615319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132807656 + 132807657.

It is an arithmetic number, because the mean of its divisors is an integer number (132807657).

Almost surely, 2^265615313 is an apocalyptic number.

It is an amenable number.

265615313 is a deficient number, since it is larger than the sum of its proper divisors (1).

265615313 is an equidigital number, since it uses as much as digits as its factorization.

265615313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 265615313 is about 16297.7088267032. The cubic root of 265615313 is about 642.8125832936.

The spelling of 265615313 in words is "two hundred sixty-five million, six hundred fifteen thousand, three hundred thirteen".