25611185085 has 32 divisors (see below), whose sum is σ = 41499319680. Its totient is φ = 13485712128.

The previous prime is 25611185081. The next prime is 25611185099. The reversal of 25611185085 is 58058111652.

It is not a de Polignac number, because 25611185085 - 2² = 25611185081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25611185081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2121687 + ... + 2133723.

It is an arithmetic number, because the mean of its divisors is an integer number (1296853740).

Almost surely, 2^25611185085 is an apocalyptic number.

It is an amenable number.

25611185085 is a deficient number, since it is larger than the sum of its proper divisors (15888134595).

25611185085 is a wasteful number, since it uses less digits than its factorization.

25611185085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13837.

The product of its (nonzero) digits is 96000, while the sum is 42.

The spelling of 25611185085 in words is "twenty-five billion, six hundred eleven million, one hundred eighty-five thousand, eighty-five".