25604701273 has 2 divisors, whose sum is σ = 25604701274. Its totient is φ = 25604701272.

The previous prime is 25604701237. The next prime is 25604701279. The reversal of 25604701273 is 37210740652.

It is a happy number.

Together with previous prime (25604701237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24635499849 + 969201424 = 156957^2 + 31132^2 .

It is a cyclic number.

It is not a de Polignac number, because 25604701273 - 2²¹ = 25602604121 is a prime.

It is not a weakly prime, because it can be changed into another prime (25604701279) 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, 12802350636 + 12802350637.

It is an arithmetic number, because the mean of its divisors is an integer number (12802350637).

Almost surely, 2^25604701273 is an apocalyptic number.

It is an amenable number.

25604701273 is a deficient number, since it is larger than the sum of its proper divisors (1).

25604701273 is an equidigital number, since it uses as much as digits as its factorization.

25604701273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 25604701273 in words is "twenty-five billion, six hundred four million, seven hundred one thousand, two hundred seventy-three".