263025613 has 2 divisors, whose sum is σ = 263025614. Its totient is φ = 263025612.

The previous prime is 263025517. The next prime is 263025629. The reversal of 263025613 is 316520362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170615844 + 92409769 = 13062^2 + 9613^2 .

It is a cyclic number.

It is not a de Polignac number, because 263025613 - 2⁹ = 263025101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263025313) 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, 131512806 + 131512807.

It is an arithmetic number, because the mean of its divisors is an integer number (131512807).

Almost surely, 2^263025613 is an apocalyptic number.

It is an amenable number.

263025613 is a deficient number, since it is larger than the sum of its proper divisors (1).

263025613 is an equidigital number, since it uses as much as digits as its factorization.

263025613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 263025613 is about 16218.0644036210. The cubic root of 263025613 is about 640.7166557037.

Adding to 263025613 its reverse (316520362), we get a palindrome (579545975).

The spelling of 263025613 in words is "two hundred sixty-three million, twenty-five thousand, six hundred thirteen".