25201880017 has 2 divisors, whose sum is σ = 25201880018. Its totient is φ = 25201880016.

The previous prime is 25201879991. The next prime is 25201880029. The reversal of 25201880017 is 71008810252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25201880001 + 16 = 158751^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 25201880017 - 2¹⁵ = 25201847249 is a prime.

It is not a weakly prime, because it can be changed into another prime (25201884017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12600940008 + 12600940009.

It is an arithmetic number, because the mean of its divisors is an integer number (12600940009).

Almost surely, 2^25201880017 is an apocalyptic number.

It is an amenable number.

25201880017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25201880017 is an equidigital number, since it uses as much as digits as its factorization.

25201880017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 34.

The spelling of 25201880017 in words is "twenty-five billion, two hundred one million, eight hundred eighty thousand, seventeen".