25950918911 has 2 divisors, whose sum is σ = 25950918912. Its totient is φ = 25950918910.

The previous prime is 25950918841. The next prime is 25950918913. The reversal of 25950918911 is 11981905952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25950918911 - 2¹⁰ = 25950917887 is a prime.

Together with 25950918913, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25950918911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25950918913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12975459455 + 12975459456.

It is an arithmetic number, because the mean of its divisors is an integer number (12975459456).

Almost surely, 2^25950918911 is an apocalyptic number.

25950918911 is a deficient number, since it is larger than the sum of its proper divisors (1).

25950918911 is an equidigital number, since it uses as much as digits as its factorization.

25950918911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 50.

The spelling of 25950918911 in words is "twenty-five billion, nine hundred fifty million, nine hundred eighteen thousand, nine hundred eleven".