25506108011 has 2 divisors, whose sum is σ = 25506108012. Its totient is φ = 25506108010.

The previous prime is 25506108007. The next prime is 25506108071. The reversal of 25506108011 is 11080160552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25506108011 - 2² = 25506108007 is a prime.

It is a super-2 number, since 2×25506108011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25506108071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753054005 + 12753054006.

It is an arithmetic number, because the mean of its divisors is an integer number (12753054006).

Almost surely, 2^25506108011 is an apocalyptic number.

25506108011 is a deficient number, since it is larger than the sum of its proper divisors (1).

25506108011 is an equidigital number, since it uses as much as digits as its factorization.

25506108011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 25506108011 its reverse (11080160552), we get a palindrome (36586268563).

The spelling of 25506108011 in words is "twenty-five billion, five hundred six million, one hundred eight thousand, eleven".