2566453249 has 2 divisors, whose sum is σ = 2566453250. Its totient is φ = 2566453248.

The previous prime is 2566453243. The next prime is 2566453349. The reversal of 2566453249 is 9423546652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2534417649 + 32035600 = 50343^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566453249 - 2⁹ = 2566452737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2566453199 and 2566453208.

It is not a weakly prime, because it can be changed into another prime (2566453243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283226624 + 1283226625.

It is an arithmetic number, because the mean of its divisors is an integer number (1283226625).

Almost surely, 2^2566453249 is an apocalyptic number.

It is an amenable number.

2566453249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566453249 is an equidigital number, since it uses as much as digits as its factorization.

2566453249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 46.

The square root of 2566453249 is about 50660.1741903835. The cubic root of 2566453249 is about 1369.1292616404.

The spelling of 2566453249 in words is "two billion, five hundred sixty-six million, four hundred fifty-three thousand, two hundred forty-nine".