2563249109 has 2 divisors, whose sum is σ = 2563249110. Its totient is φ = 2563249108.

The previous prime is 2563249067. The next prime is 2563249121. The reversal of 2563249109 is 9019423652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2339656900 + 223592209 = 48370^2 + 14953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563249109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2563249309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281624554 + 1281624555.

It is an arithmetic number, because the mean of its divisors is an integer number (1281624555).

Almost surely, 2^2563249109 is an apocalyptic number.

It is an amenable number.

2563249109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563249109 is an equidigital number, since it uses as much as digits as its factorization.

2563249109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 2563249109 is about 50628.5404589151. The cubic root of 2563249109 is about 1368.5592520715.

The spelling of 2563249109 in words is "two billion, five hundred sixty-three million, two hundred forty-nine thousand, one hundred nine".