25650017 has 2 divisors, whose sum is σ = 25650018. Its totient is φ = 25650016.

The previous prime is 25650013. The next prime is 25650029. The reversal of 25650017 is 71005652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 4157521 = 4636^2 + 2039^2 .

It is a cyclic number.

It is not a de Polignac number, because 25650017 - 2² = 25650013 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25650011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825008 + 12825009.

It is an arithmetic number, because the mean of its divisors is an integer number (12825009).

Almost surely, 2^25650017 is an apocalyptic number.

It is an amenable number.

25650017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25650017 is an equidigital number, since it uses as much as digits as its factorization.

25650017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 25650017 is about 5064.5845831618. The cubic root of 25650017 is about 294.9143369007.

Adding to 25650017 its reverse (71005652), we get a palindrome (96655669).

The spelling of 25650017 in words is "twenty-five million, six hundred fifty thousand, seventeen".