25258911611 has 2 divisors, whose sum is σ = 25258911612. Its totient is φ = 25258911610.

The previous prime is 25258911599. The next prime is 25258911679. The reversal of 25258911611 is 11611985252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25258911611 - 2⁶ = 25258911547 is a prime.

It is not a weakly prime, because it can be changed into another prime (25258911211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12629455805 + 12629455806.

It is an arithmetic number, because the mean of its divisors is an integer number (12629455806).

Almost surely, 2^25258911611 is an apocalyptic number.

25258911611 is a deficient number, since it is larger than the sum of its proper divisors (1).

25258911611 is an equidigital number, since it uses as much as digits as its factorization.

25258911611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 41.

The spelling of 25258911611 in words is "twenty-five billion, two hundred fifty-eight million, nine hundred eleven thousand, six hundred eleven".