259225819 has 2 divisors, whose sum is σ = 259225820. Its totient is φ = 259225818.

The previous prime is 259225793. The next prime is 259225823. The reversal of 259225819 is 918522952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 259225819 - 2⁵ = 259225787 is a prime.

It is a super-2 number, since 2×259225819² = 134396050472441522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (259225859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129612909 + 129612910.

It is an arithmetic number, because the mean of its divisors is an integer number (129612910).

Almost surely, 2^259225819 is an apocalyptic number.

259225819 is a deficient number, since it is larger than the sum of its proper divisors (1).

259225819 is an equidigital number, since it uses as much as digits as its factorization.

259225819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 43.

The square root of 259225819 is about 16100.4912657968. The cubic root of 259225819 is about 637.6163111628.

The spelling of 259225819 in words is "two hundred fifty-nine million, two hundred twenty-five thousand, eight hundred nineteen".