259905853 has 2 divisors, whose sum is σ = 259905854. Its totient is φ = 259905852.

The previous prime is 259905839. The next prime is 259905857. The reversal of 259905853 is 358509952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236605924 + 23299929 = 15382^2 + 4827^2 .

It is a cyclic number.

It is not a de Polignac number, because 259905853 - 2⁹ = 259905341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259905857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129952926 + 129952927.

It is an arithmetic number, because the mean of its divisors is an integer number (129952927).

Almost surely, 2^259905853 is an apocalyptic number.

It is an amenable number.

259905853 is a deficient number, since it is larger than the sum of its proper divisors (1).

259905853 is an equidigital number, since it uses as much as digits as its factorization.

259905853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 46.

The square root of 259905853 is about 16121.5958577307. The cubic root of 259905853 is about 638.1733829404.

The spelling of 259905853 in words is "two hundred fifty-nine million, nine hundred five thousand, eight hundred fifty-three".