2545566853 has 2 divisors, whose sum is σ = 2545566854. Its totient is φ = 2545566852.

The previous prime is 2545566833. The next prime is 2545566869. The reversal of 2545566853 is 3586655452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2543487489 + 2079364 = 50433^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545566853 - 2²⁵ = 2512012421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2545566797 and 2545566806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545566833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272783426 + 1272783427.

It is an arithmetic number, because the mean of its divisors is an integer number (1272783427).

Almost surely, 2^2545566853 is an apocalyptic number.

It is an amenable number.

2545566853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545566853 is an equidigital number, since it uses as much as digits as its factorization.

2545566853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320000, while the sum is 49.

The square root of 2545566853 is about 50453.6109015004. The cubic root of 2545566853 is about 1365.4050425311.

The spelling of 2545566853 in words is "two billion, five hundred forty-five million, five hundred sixty-six thousand, eight hundred fifty-three".