25056517 has 2 divisors, whose sum is σ = 25056518. Its totient is φ = 25056516.

The previous prime is 25056491. The next prime is 25056541. The reversal of 25056517 is 71565052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23290276 + 1766241 = 4826^2 + 1329^2 .

It is a cyclic number.

It is not a de Polignac number, because 25056517 - 2¹⁵ = 25023749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25056547) 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, 12528258 + 12528259.

It is an arithmetic number, because the mean of its divisors is an integer number (12528259).

Almost surely, 2^25056517 is an apocalyptic number.

It is an amenable number.

25056517 is a deficient number, since it is larger than the sum of its proper divisors (1).

25056517 is an equidigital number, since it uses as much as digits as its factorization.

25056517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 25056517 is about 5005.6485094341. The cubic root of 25056517 is about 292.6219502691.

The spelling of 25056517 in words is "twenty-five million, fifty-six thousand, five hundred seventeen".