25023578112017 has 2 divisors, whose sum is σ = 25023578112018. Its totient is φ = 25023578112016.

The previous prime is 25023578111999. The next prime is 25023578112023. The reversal of 25023578112017 is 71021187532052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20035507018816 + 4988071093201 = 4476104^2 + 2233399^2 .

It is a cyclic number.

It is not a de Polignac number, because 25023578112017 - 2¹⁸ = 25023577849873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25023578412017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12511789056008 + 12511789056009.

It is an arithmetic number, because the mean of its divisors is an integer number (12511789056009).

Almost surely, 2^{25023578112017} is an apocalyptic number.

It is an amenable number.

25023578112017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25023578112017 is an equidigital number, since it uses as much as digits as its factorization.

25023578112017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 25023578112017 in words is "twenty-five trillion, twenty-three billion, five hundred seventy-eight million, one hundred twelve thousand, seventeen".