25449103 has 2 divisors, whose sum is σ = 25449104. Its totient is φ = 25449102.

The previous prime is 25449059. The next prime is 25449131. The reversal of 25449103 is 30194452.

It is an a-pointer prime, because the next prime (25449131) can be obtained adding 25449103 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25449103 is a prime.

It is equal to p_1592164 and since 25449103 and 1592164 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25449133) 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, 12724551 + 12724552.

It is an arithmetic number, because the mean of its divisors is an integer number (12724552).

Almost surely, 2^25449103 is an apocalyptic number.

25449103 is a deficient number, since it is larger than the sum of its proper divisors (1).

25449103 is an equidigital number, since it uses as much as digits as its factorization.

25449103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25449103 is about 5044.7103980308. The cubic root of 25449103 is about 294.1423061984.

It can be divided in two parts, 25449 and 103, that added together give a palindrome (25552).

The spelling of 25449103 in words is "twenty-five million, four hundred forty-nine thousand, one hundred three".