2565235273 has 2 divisors, whose sum is σ = 2565235274. Its totient is φ = 2565235272.

The previous prime is 2565235237. The next prime is 2565235279. The reversal of 2565235273 is 3725325652.

It is a happy number.

Together with previous prime (2565235237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2219163664 + 346071609 = 47108^2 + 18603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565235273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2565235279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282617636 + 1282617637.

It is an arithmetic number, because the mean of its divisors is an integer number (1282617637).

Almost surely, 2^2565235273 is an apocalyptic number.

It is an amenable number.

2565235273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565235273 is an equidigital number, since it uses as much as digits as its factorization.

2565235273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 40.

The square root of 2565235273 is about 50648.1517234341. The cubic root of 2565235273 is about 1368.9126422719.

The spelling of 2565235273 in words is "two billion, five hundred sixty-five million, two hundred thirty-five thousand, two hundred seventy-three".