25906433911 has 2 divisors, whose sum is σ = 25906433912. Its totient is φ = 25906433910.

The previous prime is 25906433869. The next prime is 25906434007. The reversal of 25906433911 is 11933460952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25906433911 - 2⁷ = 25906433783 is a prime.

It is a super-2 number, since 2×25906433911² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25906430911) 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, 12953216955 + 12953216956.

It is an arithmetic number, because the mean of its divisors is an integer number (12953216956).

Almost surely, 2^25906433911 is an apocalyptic number.

25906433911 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906433911 is an equidigital number, since it uses as much as digits as its factorization.

25906433911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 25906433911 in words is "twenty-five billion, nine hundred six million, four hundred thirty-three thousand, nine hundred eleven".