25881983 has 2 divisors, whose sum is σ = 25881984. Its totient is φ = 25881982.

The previous prime is 25881881. The next prime is 25882013. The reversal of 25881983 is 38918852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25881983 - 2¹⁶ = 25816447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25881083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12940991 + 12940992.

It is an arithmetic number, because the mean of its divisors is an integer number (12940992).

Almost surely, 2^25881983 is an apocalyptic number.

25881983 is a deficient number, since it is larger than the sum of its proper divisors (1).

25881983 is an equidigital number, since it uses as much as digits as its factorization.

25881983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 25881983 is about 5087.4338324935. The cubic root of 25881983 is about 295.8006898760.

The spelling of 25881983 in words is "twenty-five million, eight hundred eighty-one thousand, nine hundred eighty-three".