25500030317 has 2 divisors, whose sum is σ = 25500030318. Its totient is φ = 25500030316.

The previous prime is 25500030301. The next prime is 25500030329. The reversal of 25500030317 is 71303000552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17758494121 + 7741536196 = 133261^2 + 87986^2 .

It is a cyclic number.

It is not a de Polignac number, because 25500030317 - 2⁴ = 25500030301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25500030217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12750015158 + 12750015159.

It is an arithmetic number, because the mean of its divisors is an integer number (12750015159).

Almost surely, 2^25500030317 is an apocalyptic number.

It is an amenable number.

25500030317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25500030317 is an equidigital number, since it uses as much as digits as its factorization.

25500030317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 26.

Adding to 25500030317 its reverse (71303000552), we get a palindrome (96803030869).

The spelling of 25500030317 in words is "twenty-five billion, five hundred million, thirty thousand, three hundred seventeen".