25453155397 has 2 divisors, whose sum is σ = 25453155398. Its totient is φ = 25453155396.

The previous prime is 25453155391. The next prime is 25453155433. The reversal of 25453155397 is 79355135452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12980956356 + 12472199041 = 113934^2 + 111679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25453155397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25453155397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25453155391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12726577698 + 12726577699.

It is an arithmetic number, because the mean of its divisors is an integer number (12726577699).

Almost surely, 2^25453155397 is an apocalyptic number.

It is an amenable number.

25453155397 is a deficient number, since it is larger than the sum of its proper divisors (1).

25453155397 is an equidigital number, since it uses as much as digits as its factorization.

25453155397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835000, while the sum is 49.

The spelling of 25453155397 in words is "twenty-five billion, four hundred fifty-three million, one hundred fifty-five thousand, three hundred ninety-seven".