25703645017 has 2 divisors, whose sum is σ = 25703645018. Its totient is φ = 25703645016.

The previous prime is 25703645003. The next prime is 25703645021. The reversal of 25703645017 is 71054630752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25424621401 + 279023616 = 159451^2 + 16704^2 .

It is a cyclic number.

It is not a de Polignac number, because 25703645017 - 2¹¹ = 25703642969 is a prime.

It is not a weakly prime, because it can be changed into another prime (25703645027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12851822508 + 12851822509.

It is an arithmetic number, because the mean of its divisors is an integer number (12851822509).

Almost surely, 2^25703645017 is an apocalyptic number.

It is an amenable number.

25703645017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25703645017 is an equidigital number, since it uses as much as digits as its factorization.

25703645017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 25703645017 in words is "twenty-five billion, seven hundred three million, six hundred forty-five thousand, seventeen".