25206555259 has 2 divisors, whose sum is σ = 25206555260. Its totient is φ = 25206555258.

The previous prime is 25206555239. The next prime is 25206555331. The reversal of 25206555259 is 95255560252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25206555259 - 2⁷ = 25206555131 is a prime.

It is not a weakly prime, because it can be changed into another prime (25206555239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12603277629 + 12603277630.

It is an arithmetic number, because the mean of its divisors is an integer number (12603277630).

Almost surely, 2^25206555259 is an apocalyptic number.

25206555259 is a deficient number, since it is larger than the sum of its proper divisors (1).

25206555259 is an equidigital number, since it uses as much as digits as its factorization.

25206555259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 25206555259 in words is "twenty-five billion, two hundred six million, five hundred fifty-five thousand, two hundred fifty-nine".