25641103 has 2 divisors, whose sum is σ = 25641104. Its totient is φ = 25641102.

The previous prime is 25641079. The next prime is 25641157. The reversal of 25641103 is 30114652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25641103 - 2⁹ = 25640591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25641163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12820551 + 12820552.

It is an arithmetic number, because the mean of its divisors is an integer number (12820552).

Almost surely, 2^25641103 is an apocalyptic number.

25641103 is a deficient number, since it is larger than the sum of its proper divisors (1).

25641103 is an equidigital number, since it uses as much as digits as its factorization.

25641103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 25641103 is about 5063.7044739992. The cubic root of 25641103 is about 294.8801696590.

Adding to 25641103 its reverse (30114652), we get a palindrome (55755755).

The spelling of 25641103 in words is "twenty-five million, six hundred forty-one thousand, one hundred three".