25061111109 has 48 divisors (see below), whose sum is σ = 38135784960. Its totient is φ = 15836895360.

The previous prime is 25061111087. The next prime is 25061111137. The reversal of 25061111109 is 90111116052.

25061111109 is a `hidden beast` number, since 25 + 0 + 611 + 11 + 10 + 9 = 666.

It is not a de Polignac number, because 25061111109 - 2⁵ = 25061111077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25061111809) 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 in 47 ways as a sum of consecutive naturals, for example, 12701047 + ... + 12703019.

It is an arithmetic number, because the mean of its divisors is an integer number (794495520).

Almost surely, 2^25061111109 is an apocalyptic number.

It is an amenable number.

25061111109 is a deficient number, since it is larger than the sum of its proper divisors (13074673851).

25061111109 is a wasteful number, since it uses less digits than its factorization.

25061111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922 (or 2919 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 27.

The spelling of 25061111109 in words is "twenty-five billion, sixty-one million, one hundred eleven thousand, one hundred nine".