258995129 has 2 divisors, whose sum is σ = 258995130. Its totient is φ = 258995128.

The previous prime is 258995089. The next prime is 258995147. The reversal of 258995129 is 921599852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203119504 + 55875625 = 14252^2 + 7475^2 .

It is a cyclic number.

It is not a de Polignac number, because 258995129 - 2⁸ = 258994873 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (258995159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129497564 + 129497565.

It is an arithmetic number, because the mean of its divisors is an integer number (129497565).

Almost surely, 2^258995129 is an apocalyptic number.

It is an amenable number.

258995129 is a deficient number, since it is larger than the sum of its proper divisors (1).

258995129 is an equidigital number, since it uses as much as digits as its factorization.

258995129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 50.

The square root of 258995129 is about 16093.3256041130. The cubic root of 258995129 is about 637.4271127229.

The spelling of 258995129 in words is "two hundred fifty-eight million, nine hundred ninety-five thousand, one hundred twenty-nine".