25327987 has 2 divisors, whose sum is σ = 25327988. Its totient is φ = 25327986.

The previous prime is 25327949. The next prime is 25327999. The reversal of 25327987 is 78972352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25327987 - 2⁷ = 25327859 is a prime.

It is not a weakly prime, because it can be changed into another prime (25327087) 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, 12663993 + 12663994.

It is an arithmetic number, because the mean of its divisors is an integer number (12663994).

Almost surely, 2^25327987 is an apocalyptic number.

25327987 is a deficient number, since it is larger than the sum of its proper divisors (1).

25327987 is an equidigital number, since it uses as much as digits as its factorization.

25327987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 25327987 is about 5032.6918244613. The cubic root of 25327987 is about 293.6749419216.

The spelling of 25327987 in words is "twenty-five million, three hundred twenty-seven thousand, nine hundred eighty-seven".