25803078473 has 2 divisors, whose sum is σ = 25803078474. Its totient is φ = 25803078472.

The previous prime is 25803078419. The next prime is 25803078479. The reversal of 25803078473 is 37487030852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20762504464 + 5040574009 = 144092^2 + 70997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25803078473 is a prime.

It is not a weakly prime, because it can be changed into another prime (25803078479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12901539236 + 12901539237.

It is an arithmetic number, because the mean of its divisors is an integer number (12901539237).

Almost surely, 2^25803078473 is an apocalyptic number.

It is an amenable number.

25803078473 is a deficient number, since it is larger than the sum of its proper divisors (1).

25803078473 is an equidigital number, since it uses as much as digits as its factorization.

25803078473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 25803078473 in words is "twenty-five billion, eight hundred three million, seventy-eight thousand, four hundred seventy-three".