25396946573 has 2 divisors, whose sum is σ = 25396946574. Its totient is φ = 25396946572.

The previous prime is 25396946567. The next prime is 25396946593. The reversal of 25396946573 is 37564969352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25383499684 + 13446889 = 159322^2 + 3667^2 .

It is a cyclic number.

It is not a de Polignac number, because 25396946573 - 2⁸ = 25396946317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25396946593) 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, 12698473286 + 12698473287.

It is an arithmetic number, because the mean of its divisors is an integer number (12698473287).

Almost surely, 2^25396946573 is an apocalyptic number.

It is an amenable number.

25396946573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25396946573 is an equidigital number, since it uses as much as digits as its factorization.

25396946573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36741600, while the sum is 59.

The spelling of 25396946573 in words is "twenty-five billion, three hundred ninety-six million, nine hundred forty-six thousand, five hundred seventy-three".