25911983 has 2 divisors, whose sum is σ = 25911984. Its totient is φ = 25911982.

The previous prime is 25911979. The next prime is 25911997. The reversal of 25911983 is 38911952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25911983 - 2² = 25911979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25911913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12955991 + 12955992.

It is an arithmetic number, because the mean of its divisors is an integer number (12955992).

Almost surely, 2^25911983 is an apocalyptic number.

25911983 is a deficient number, since it is larger than the sum of its proper divisors (1).

25911983 is an equidigital number, since it uses as much as digits as its factorization.

25911983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 38.

The square root of 25911983 is about 5090.3814198938. The cubic root of 25911983 is about 295.9149340107.

The spelling of 25911983 in words is "twenty-five million, nine hundred eleven thousand, nine hundred eighty-three".