259145729 has 2 divisors, whose sum is σ = 259145730. Its totient is φ = 259145728.

The previous prime is 259145701. The next prime is 259145741. The reversal of 259145729 is 927541952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242113600 + 17032129 = 15560^2 + 4127^2 .

It is a cyclic number.

It is not a de Polignac number, because 259145729 - 2¹² = 259141633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259145729.

It is not a weakly prime, because it can be changed into another prime (259145129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129572864 + 129572865.

It is an arithmetic number, because the mean of its divisors is an integer number (129572865).

It is a Proth number, since it is equal to 15817 ⋅ 2¹⁴ + 1 and 15817 < 2¹⁴.

Almost surely, 2^259145729 is an apocalyptic number.

It is an amenable number.

259145729 is a deficient number, since it is larger than the sum of its proper divisors (1).

259145729 is an equidigital number, since it uses as much as digits as its factorization.

259145729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 259145729 is about 16098.0038824694. The cubic root of 259145729 is about 637.5506387559.

The spelling of 259145729 in words is "two hundred fifty-nine million, one hundred forty-five thousand, seven hundred twenty-nine".