258280069 has 2 divisors, whose sum is σ = 258280070. Its totient is φ = 258280068.

The previous prime is 258279991. The next prime is 258280079. The reversal of 258280069 is 960082852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258019969 + 260100 = 16063^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 258280069 - 2²³ = 249891461 is a prime.

It is a super-2 number, since 2×258280069² = 133417188085289522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258280079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129140034 + 129140035.

It is an arithmetic number, because the mean of its divisors is an integer number (129140035).

Almost surely, 2^258280069 is an apocalyptic number.

It is an amenable number.

258280069 is a deficient number, since it is larger than the sum of its proper divisors (1).

258280069 is an equidigital number, since it uses as much as digits as its factorization.

258280069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 258280069 is about 16071.0942066805. The cubic root of 258280069 is about 636.8399475649.

The spelling of 258280069 in words is "two hundred fifty-eight million, two hundred eighty thousand, sixty-nine".