25250717 has 2 divisors, whose sum is σ = 25250718. Its totient is φ = 25250716.

The previous prime is 25250713. The next prime is 25250777. The reversal of 25250717 is 71705252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 11195716 = 3749^2 + 3346^2 .

It is a cyclic number.

It is not a de Polignac number, because 25250717 - 2² = 25250713 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25250717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25250713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625358 + 12625359.

It is an arithmetic number, because the mean of its divisors is an integer number (12625359).

Almost surely, 2^25250717 is an apocalyptic number.

It is an amenable number.

25250717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250717 is an equidigital number, since it uses as much as digits as its factorization.

25250717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 25250717 is about 5025.0091542205. The cubic root of 25250717 is about 293.3759922750.

Adding to 25250717 its reverse (71705252), we get a palindrome (96955969).

The spelling of 25250717 in words is "twenty-five million, two hundred fifty thousand, seven hundred seventeen".