25611000042 has 16 divisors (see below), whose sum is σ = 51357155040. Its totient is φ = 8514474192.

The previous prime is 25611000031. The next prime is 25611000059. The reversal of 25611000042 is 24000011652.

It is a junction number, because it is equal to n+sod(n) for n = 25610999982 and 25611000018.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5628993 + ... + 5633540.

It is an arithmetic number, because the mean of its divisors is an integer number (3209822190).

Almost surely, 2^25611000042 is an apocalyptic number.

25611000042 is an abundant number, since it is smaller than the sum of its proper divisors (25746154998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25611000042 is a wasteful number, since it uses less digits than its factorization.

25611000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262917.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 25611000042 its reverse (24000011652), we get a palindrome (49611011694).

The spelling of 25611000042 in words is "twenty-five billion, six hundred eleven million, forty-two", and thus it is an aban number.