265203225517 has 2 divisors, whose sum is σ = 265203225518. Its totient is φ = 265203225516.

The previous prime is 265203225407. The next prime is 265203225541. The reversal of 265203225517 is 715522302562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241224393316 + 23978832201 = 491146^2 + 154851^2 .

It is a cyclic number.

It is not a de Polignac number, because 265203225517 - 2¹¹ = 265203223469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265203225517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265203225017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132601612758 + 132601612759.

It is an arithmetic number, because the mean of its divisors is an integer number (132601612759).

Almost surely, 2^265203225517 is an apocalyptic number.

It is an amenable number.

265203225517 is a deficient number, since it is larger than the sum of its proper divisors (1).

265203225517 is an equidigital number, since it uses as much as digits as its factorization.

265203225517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 265203225517 in words is "two hundred sixty-five billion, two hundred three million, two hundred twenty-five thousand, five hundred seventeen".