25876517 has 2 divisors, whose sum is σ = 25876518. Its totient is φ = 25876516.

The previous prime is 25876511. The next prime is 25876519. The reversal of 25876517 is 71567852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21215236 + 4661281 = 4606^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 25876517 - 2¹⁸ = 25614373 is a prime.

Together with 25876519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25876511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12938258 + 12938259.

It is an arithmetic number, because the mean of its divisors is an integer number (12938259).

Almost surely, 2^25876517 is an apocalyptic number.

It is an amenable number.

25876517 is a deficient number, since it is larger than the sum of its proper divisors (1).

25876517 is an equidigital number, since it uses as much as digits as its factorization.

25876517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 41.

The square root of 25876517 is about 5086.8965981235. The cubic root of 25876517 is about 295.7798650883.

The spelling of 25876517 in words is "twenty-five million, eight hundred seventy-six thousand, five hundred seventeen".