25545355615583 has 2 divisors, whose sum is σ = 25545355615584. Its totient is φ = 25545355615582.

The previous prime is 25545355615567. The next prime is 25545355615601. The reversal of 25545355615583 is 38551655354552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25545355615583 - 2⁴ = 25545355615567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25545355615183) 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, 12772677807791 + 12772677807792.

It is an arithmetic number, because the mean of its divisors is an integer number (12772677807792).

Almost surely, 2^{25545355615583} is an apocalyptic number.

25545355615583 is a deficient number, since it is larger than the sum of its proper divisors (1).

25545355615583 is an equidigital number, since it uses as much as digits as its factorization.

25545355615583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270000000, while the sum is 62.

The spelling of 25545355615583 in words is "twenty-five trillion, five hundred forty-five billion, three hundred fifty-five million, six hundred fifteen thousand, five hundred eighty-three".