2565220543 has 2 divisors, whose sum is σ = 2565220544. Its totient is φ = 2565220542.

The previous prime is 2565220531. The next prime is 2565220547. The reversal of 2565220543 is 3450225652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565220543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2565220499 and 2565220508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565220547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282610271 + 1282610272.

It is an arithmetic number, because the mean of its divisors is an integer number (1282610272).

Almost surely, 2^2565220543 is an apocalyptic number.

2565220543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565220543 is an equidigital number, since it uses as much as digits as its factorization.

2565220543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 2565220543 is about 50648.0063082448. The cubic root of 2565220543 is about 1368.9100220935.

The spelling of 2565220543 in words is "two billion, five hundred sixty-five million, two hundred twenty thousand, five hundred forty-three".