25727993 has 2 divisors, whose sum is σ = 25727994. Its totient is φ = 25727992.

The previous prime is 25727983. The next prime is 25728023. The reversal of 25727993 is 39972752.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25725184 + 2809 = 5072^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 25727993 - 2⁶ = 25727929 is a prime.

It is not a weakly prime, because it can be changed into another prime (25727903) 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, 12863996 + 12863997.

It is an arithmetic number, because the mean of its divisors is an integer number (12863997).

Almost surely, 2^25727993 is an apocalyptic number.

It is an amenable number.

25727993 is a deficient number, since it is larger than the sum of its proper divisors (1).

25727993 is an equidigital number, since it uses as much as digits as its factorization.

25727993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 44.

The square root of 25727993 is about 5072.2769049018. The cubic root of 25727993 is about 295.2128809104.

The spelling of 25727993 in words is "twenty-five million, seven hundred twenty-seven thousand, nine hundred ninety-three".