25944403 has 2 divisors, whose sum is σ = 25944404. Its totient is φ = 25944402.

The previous prime is 25944383. The next prime is 25944467. The reversal of 25944403 is 30444952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25944403 - 2⁵ = 25944371 is a prime.

It is a super-2 number, since 2×25944403² = 1346224094052818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25944203) 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, 12972201 + 12972202.

It is an arithmetic number, because the mean of its divisors is an integer number (12972202).

Almost surely, 2^25944403 is an apocalyptic number.

25944403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25944403 is an equidigital number, since it uses as much as digits as its factorization.

25944403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 25944403 is about 5093.5648616661. The cubic root of 25944403 is about 296.0382947472.

The spelling of 25944403 in words is "twenty-five million, nine hundred forty-four thousand, four hundred three".