25430063809309 has 2 divisors, whose sum is σ = 25430063809310. Its totient is φ = 25430063809308.

The previous prime is 25430063809291. The next prime is 25430063809333. The reversal of 25430063809309 is 90390836003452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19331164345284 + 6098899464025 = 4396722^2 + 2469595^2 .

It is a cyclic number.

It is not a de Polignac number, because 25430063809309 - 2⁵ = 25430063809277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25430063809349) 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, 12715031904654 + 12715031904655.

It is an arithmetic number, because the mean of its divisors is an integer number (12715031904655).

Almost surely, 2^{25430063809309} is an apocalyptic number.

It is an amenable number.

25430063809309 is a deficient number, since it is larger than the sum of its proper divisors (1).

25430063809309 is an equidigital number, since it uses as much as digits as its factorization.

25430063809309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 25430063809309 in words is "twenty-five trillion, four hundred thirty billion, sixty-three million, eight hundred nine thousand, three hundred nine".