258265279 has 2 divisors, whose sum is σ = 258265280. Its totient is φ = 258265278.

The previous prime is 258265261. The next prime is 258265283. The reversal of 258265279 is 972562852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258265279 - 2⁹ = 258264767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258265219) 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, 129132639 + 129132640.

It is an arithmetic number, because the mean of its divisors is an integer number (129132640).

Almost surely, 2^258265279 is an apocalyptic number.

258265279 is a deficient number, since it is larger than the sum of its proper divisors (1).

258265279 is an equidigital number, since it uses as much as digits as its factorization.

258265279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 258265279 is about 16070.6340571864. The cubic root of 258265279 is about 636.8277914552.

The spelling of 258265279 in words is "two hundred fifty-eight million, two hundred sixty-five thousand, two hundred seventy-nine".