25453620317 has 2 divisors, whose sum is σ = 25453620318. Its totient is φ = 25453620316.

The previous prime is 25453620307. The next prime is 25453620341. The reversal of 25453620317 is 71302635452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24141079876 + 1312540441 = 155374^2 + 36229^2 .

It is a cyclic number.

It is not a de Polignac number, because 25453620317 - 2⁶ = 25453620253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25453620307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12726810158 + 12726810159.

It is an arithmetic number, because the mean of its divisors is an integer number (12726810159).

Almost surely, 2^25453620317 is an apocalyptic number.

It is an amenable number.

25453620317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25453620317 is an equidigital number, since it uses as much as digits as its factorization.

25453620317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 25453620317 in words is "twenty-five billion, four hundred fifty-three million, six hundred twenty thousand, three hundred seventeen".