1258358863249 has 2 divisors, whose sum is σ = 1258358863250. Its totient is φ = 1258358863248.

The previous prime is 1258358863213. The next prime is 1258358863261. The reversal of 1258358863249 is 9423688538521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766424958849 + 491933904400 = 875457^2 + 701380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1258358863249 - 2¹⁵ = 1258358830481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1258358863049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629179431624 + 629179431625.

It is an arithmetic number, because the mean of its divisors is an integer number (629179431625).

Almost surely, 2^{1258358863249} is an apocalyptic number.

It is an amenable number.

1258358863249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258358863249 is an equidigital number, since it uses as much as digits as its factorization.

1258358863249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99532800, while the sum is 64.

The spelling of 1258358863249 in words is "one trillion, two hundred fifty-eight billion, three hundred fifty-eight million, eight hundred sixty-three thousand, two hundred forty-nine".