25330030508257 has 2 divisors, whose sum is σ = 25330030508258. Its totient is φ = 25330030508256.

The previous prime is 25330030508221. The next prime is 25330030508329. The reversal of 25330030508257 is 75280503003352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25118981229456 + 211049278801 = 5011884^2 + 459401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25330030508257 is a prime.

It is a super-2 number, since 2×25330030508257² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25330030508207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12665015254128 + 12665015254129.

It is an arithmetic number, because the mean of its divisors is an integer number (12665015254129).

Almost surely, 2^{25330030508257} is an apocalyptic number.

It is an amenable number.

25330030508257 is a deficient number, since it is larger than the sum of its proper divisors (1).

25330030508257 is an equidigital number, since it uses as much as digits as its factorization.

25330030508257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 25330030508257 in words is "twenty-five trillion, three hundred thirty billion, thirty million, five hundred eight thousand, two hundred fifty-seven".