2565310001 has 2 divisors, whose sum is σ = 2565310002. Its totient is φ = 2565310000.

The previous prime is 2565309997. The next prime is 2565310049. The reversal of 2565310001 is 1000135652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2517630976 + 47679025 = 50176^2 + 6905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565310001 - 2² = 2565309997 is a prime.

It is not a weakly prime, because it can be changed into another prime (2565310091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282655000 + 1282655001.

It is an arithmetic number, because the mean of its divisors is an integer number (1282655001).

Almost surely, 2^2565310001 is an apocalyptic number.

It is an amenable number.

2565310001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565310001 is an equidigital number, since it uses as much as digits as its factorization.

2565310001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2565310001 is about 50648.8894350113. The cubic root of 2565310001 is about 1368.9259347642.

Adding to 2565310001 its reverse (1000135652), we get a palindrome (3565445653).

The spelling of 2565310001 in words is "two billion, five hundred sixty-five million, three hundred ten thousand, one".