25270317689 has 2 divisors, whose sum is σ = 25270317690. Its totient is φ = 25270317688.

The previous prime is 25270317643. The next prime is 25270317703. The reversal of 25270317689 is 98671307252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19906952464 + 5363365225 = 141092^2 + 73235^2 .

It is a cyclic number.

It is not a de Polignac number, because 25270317689 - 2¹⁶ = 25270252153 is a prime.

It is a super-2 number, since 2×25270317689² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25270317389) 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, 12635158844 + 12635158845.

It is an arithmetic number, because the mean of its divisors is an integer number (12635158845).

Almost surely, 2^25270317689 is an apocalyptic number.

It is an amenable number.

25270317689 is a deficient number, since it is larger than the sum of its proper divisors (1).

25270317689 is an equidigital number, since it uses as much as digits as its factorization.

25270317689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 25270317689 in words is "twenty-five billion, two hundred seventy million, three hundred seventeen thousand, six hundred eighty-nine".