25766017 has 2 divisors, whose sum is σ = 25766018. Its totient is φ = 25766016.

The previous prime is 25765981. The next prime is 25766047. The reversal of 25766017 is 71066752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21538881 + 4227136 = 4641^2 + 2056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25766017 is a prime.

It is not a weakly prime, because it can be changed into another prime (25766047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883008 + 12883009.

It is an arithmetic number, because the mean of its divisors is an integer number (12883009).

Almost surely, 2^25766017 is an apocalyptic number.

It is an amenable number.

25766017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25766017 is an equidigital number, since it uses as much as digits as its factorization.

25766017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 25766017 is about 5076.0237391092. The cubic root of 25766017 is about 295.3582433195.

The spelling of 25766017 in words is "twenty-five million, seven hundred sixty-six thousand, seventeen".