25275818017 has 2 divisors, whose sum is σ = 25275818018. Its totient is φ = 25275818016.

The previous prime is 25275817981. The next prime is 25275818111. The reversal of 25275818017 is 71081857252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21879143056 + 3396674961 = 147916^2 + 58281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25275818017 is a prime.

It is not a weakly prime, because it can be changed into another prime (25275818317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637909008 + 12637909009.

It is an arithmetic number, because the mean of its divisors is an integer number (12637909009).

Almost surely, 2^25275818017 is an apocalyptic number.

It is an amenable number.

25275818017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25275818017 is an equidigital number, since it uses as much as digits as its factorization.

25275818017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 25275818017 in words is "twenty-five billion, two hundred seventy-five million, eight hundred eighteen thousand, seventeen".