25305983 has 2 divisors, whose sum is σ = 25305984. Its totient is φ = 25305982.

The previous prime is 25305977. The next prime is 25306027. The reversal of 25305983 is 38950352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25305983 - 2⁶ = 25305919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25305383) 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, 12652991 + 12652992.

It is an arithmetic number, because the mean of its divisors is an integer number (12652992).

Almost surely, 2^25305983 is an apocalyptic number.

25305983 is a deficient number, since it is larger than the sum of its proper divisors (1).

25305983 is an equidigital number, since it uses as much as digits as its factorization.

25305983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 25305983 is about 5030.5052430149. The cubic root of 25305983 is about 293.5898727101.

The spelling of 25305983 in words is "twenty-five million, three hundred five thousand, nine hundred eighty-three".