25811026081103 has 16 divisors (see below), whose sum is σ = 26726677488000. Its totient is φ = 24897087532800.

The previous prime is 25811026081079. The next prime is 25811026081111. The reversal of 25811026081103 is 30118062011852.

It is a cyclic number.

It is not a de Polignac number, because 25811026081103 - 2³⁰ = 25809952339279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25811026081123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318217253 + ... + 318298353.

It is an arithmetic number, because the mean of its divisors is an integer number (1670417343000).

Almost surely, 2^{25811026081103} is an apocalyptic number.

25811026081103 is a deficient number, since it is larger than the sum of its proper divisors (915651406897).

25811026081103 is a wasteful number, since it uses less digits than its factorization.

25811026081103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91522.

The product of its (nonzero) digits is 23040, while the sum is 38.

Adding to 25811026081103 its reverse (30118062011852), we get a palindrome (55929088092955).

The spelling of 25811026081103 in words is "twenty-five trillion, eight hundred eleven billion, twenty-six million, eighty-one thousand, one hundred three".