2565230077 has 2 divisors, whose sum is σ = 2565230078. Its totient is φ = 2565230076.

The previous prime is 2565230009. The next prime is 2565230081. The reversal of 2565230077 is 7700325652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934768196 + 630461881 = 43986^2 + 25109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565230077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565230677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282615038 + 1282615039.

It is an arithmetic number, because the mean of its divisors is an integer number (1282615039).

Almost surely, 2^2565230077 is an apocalyptic number.

It is an amenable number.

2565230077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565230077 is an equidigital number, since it uses as much as digits as its factorization.

2565230077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 2565230077 is about 50648.1004283478. The cubic root of 2565230077 is about 1368.9117180064.

The spelling of 2565230077 in words is "two billion, five hundred sixty-five million, two hundred thirty thousand, seventy-seven".