258112909 has 2 divisors, whose sum is σ = 258112910. Its totient is φ = 258112908.

The previous prime is 258112859. The next prime is 258112951. The reversal of 258112909 is 909211852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229522500 + 28590409 = 15150^2 + 5347^2 .

It is a cyclic number.

It is not a de Polignac number, because 258112909 - 2¹¹ = 258110861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258112979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129056454 + 129056455.

It is an arithmetic number, because the mean of its divisors is an integer number (129056455).

Almost surely, 2^258112909 is an apocalyptic number.

It is an amenable number.

258112909 is a deficient number, since it is larger than the sum of its proper divisors (1).

258112909 is an equidigital number, since it uses as much as digits as its factorization.

258112909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 258112909 is about 16065.8927234063. The cubic root of 258112909 is about 636.7025293737.

The spelling of 258112909 in words is "two hundred fifty-eight million, one hundred twelve thousand, nine hundred nine".