25948965473 has 2 divisors, whose sum is σ = 25948965474. Its totient is φ = 25948965472.

The previous prime is 25948965433. The next prime is 25948965479. The reversal of 25948965473 is 37456984952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17167026529 + 8781938944 = 131023^2 + 93712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25948965473 is a prime.

It is a super-2 number, since 2×25948965473² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25948965479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12974482736 + 12974482737.

It is an arithmetic number, because the mean of its divisors is an integer number (12974482737).

Almost surely, 2^25948965473 is an apocalyptic number.

It is an amenable number.

25948965473 is a deficient number, since it is larger than the sum of its proper divisors (1).

25948965473 is an equidigital number, since it uses as much as digits as its factorization.

25948965473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65318400, while the sum is 62.

The spelling of 25948965473 in words is "twenty-five billion, nine hundred forty-eight million, nine hundred sixty-five thousand, four hundred seventy-three".