25545355616047 has 2 divisors, whose sum is σ = 25545355616048. Its totient is φ = 25545355616046.

The previous prime is 25545355615993. The next prime is 25545355616051. The reversal of 25545355616047 is 74061655354552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25545355616047 - 2¹⁹ = 25545355091759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25545355615982 and 25545355616000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25545355616947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772677808023 + 12772677808024.

It is an arithmetic number, because the mean of its divisors is an integer number (12772677808024).

Almost surely, 2^{25545355616047} is an apocalyptic number.

25545355616047 is a deficient number, since it is larger than the sum of its proper divisors (1).

25545355616047 is an equidigital number, since it uses as much as digits as its factorization.

25545355616047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600000, while the sum is 58.

The spelling of 25545355616047 in words is "twenty-five trillion, five hundred forty-five billion, three hundred fifty-five million, six hundred sixteen thousand, forty-seven".