259234587221 has 2 divisors, whose sum is σ = 259234587222. Its totient is φ = 259234587220.

The previous prime is 259234587197. The next prime is 259234587247. The reversal of 259234587221 is 122785432952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259194010321 + 40576900 = 509111^2 + 6370^2 .

It is a cyclic number.

It is not a de Polignac number, because 259234587221 - 2²⁶ = 259167478357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259234587221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259234587121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129617293610 + 129617293611.

It is an arithmetic number, because the mean of its divisors is an integer number (129617293611).

Almost surely, 2^259234587221 is an apocalyptic number.

It is an amenable number.

259234587221 is a deficient number, since it is larger than the sum of its proper divisors (1).

259234587221 is an equidigital number, since it uses as much as digits as its factorization.

259234587221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 50.

The spelling of 259234587221 in words is "two hundred fifty-nine billion, two hundred thirty-four million, five hundred eighty-seven thousand, two hundred twenty-one".