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25117 has 2 divisors, whose sum is σ = 25118. Its totient is φ = 25116.

The previous prime is 25111. The next prime is 25121. The reversal of 25117 is 71152.

Adding to 25117 its reverse (71152), we get a palindrome (96269).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22201 + 2916 = 149^2 + 54^2 .

It is a cyclic number.

It is not a de Polignac number, because 25117 - 27 = 24989 is a prime.

25117 is a lucky number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 25117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12558 + 12559.

It is an arithmetic number, because the mean of its divisors is an integer number (12559).

225117 is an apocalyptic number.

25117 is the 92-nd hex number.

It is an amenable number.

25117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25117 is an equidigital number, since it uses as much as digits as its factorization.

25117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70, while the sum is 16.

The square root of 25117 is about 158.4834376205. The cubic root of 25117 is about 29.2857210844.

The spelling of 25117 in words is "twenty-five thousand, one hundred seventeen".