25830487065949 has 2 divisors, whose sum is σ = 25830487065950. Its totient is φ = 25830487065948.

The previous prime is 25830487065947. The next prime is 25830487066001. The reversal of 25830487065949 is 94956078403852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22126844550724 + 3703642515225 = 4703918^2 + 1924485^2 .

It is a cyclic number.

It is not a de Polignac number, because 25830487065949 - 2¹ = 25830487065947 is a prime.

Together with 25830487065947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25830487065947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915243532974 + 12915243532975.

It is an arithmetic number, because the mean of its divisors is an integer number (12915243532975).

Almost surely, 2^{25830487065949} is an apocalyptic number.

It is an amenable number.

25830487065949 is a deficient number, since it is larger than the sum of its proper divisors (1).

25830487065949 is an equidigital number, since it uses as much as digits as its factorization.

25830487065949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 522547200, while the sum is 70.

The spelling of 25830487065949 in words is "twenty-five trillion, eight hundred thirty billion, four hundred eighty-seven million, sixty-five thousand, nine hundred forty-nine".