2565266003 has 2 divisors, whose sum is σ = 2565266004. Its totient is φ = 2565266002.

The previous prime is 2565265991. The next prime is 2565266023. The reversal of 2565266003 is 3006625652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2565266003 - 2⁶ = 2565265939 is a prime.

It is a super-2 number, since 2×2565266003² = 13161179332295192018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2565266023) 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, 1282633001 + 1282633002.

It is an arithmetic number, because the mean of its divisors is an integer number (1282633002).

Almost surely, 2^2565266003 is an apocalyptic number.

2565266003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565266003 is an equidigital number, since it uses as much as digits as its factorization.

2565266003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2565266003 is about 50648.4550899630. The cubic root of 2565266003 is about 1368.9181085044.

The spelling of 2565266003 in words is "two billion, five hundred sixty-five million, two hundred sixty-six thousand, three".