25801103 has 2 divisors, whose sum is σ = 25801104. Its totient is φ = 25801102.

The previous prime is 25801081. The next prime is 25801133. The reversal of 25801103 is 30110852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25801103 - 2¹⁰ = 25800079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25801133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12900551 + 12900552.

It is an arithmetic number, because the mean of its divisors is an integer number (12900552).

Almost surely, 2^25801103 is an apocalyptic number.

25801103 is a deficient number, since it is larger than the sum of its proper divisors (1).

25801103 is an equidigital number, since it uses as much as digits as its factorization.

25801103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 25801103 is about 5079.4786149761. The cubic root of 25801103 is about 295.4922472039.

Adding to 25801103 its reverse (30110852), we get a palindrome (55911955).

The spelling of 25801103 in words is "twenty-five million, eight hundred one thousand, one hundred three".