259242481 has 2 divisors, whose sum is σ = 259242482. Its totient is φ = 259242480.

The previous prime is 259242421. The next prime is 259242509. The reversal of 259242481 is 184242952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179318881 + 79923600 = 13391^2 + 8940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259242481 is a prime.

It is a super-2 number, since 2×259242481² = 134413327910070722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259242481.

It is not a weakly prime, because it can be changed into another prime (259242421) 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, 129621240 + 129621241.

It is an arithmetic number, because the mean of its divisors is an integer number (129621241).

Almost surely, 2^259242481 is an apocalyptic number.

It is an amenable number.

259242481 is a deficient number, since it is larger than the sum of its proper divisors (1).

259242481 is an equidigital number, since it uses as much as digits as its factorization.

259242481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 259242481 is about 16101.0086951098. The cubic root of 259242481 is about 637.6299720132.

The spelling of 259242481 in words is "two hundred fifty-nine million, two hundred forty-two thousand, four hundred eighty-one".