2585681347 has 2 divisors, whose sum is σ = 2585681348. Its totient is φ = 2585681346.

The previous prime is 2585681341. The next prime is 2585681363. The reversal of 2585681347 is 7431865852.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2585681347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2585681347.

It is not a weakly prime, because it can be changed into another prime (2585681341) 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, 1292840673 + 1292840674.

It is an arithmetic number, because the mean of its divisors is an integer number (1292840674).

Almost surely, 2^2585681347 is an apocalyptic number.

2585681347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585681347 is an equidigital number, since it uses as much as digits as its factorization.

2585681347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 49.

The square root of 2585681347 is about 50849.5953474558. The cubic root of 2585681347 is about 1372.5399710767.

The spelling of 2585681347 in words is "two billion, five hundred eighty-five million, six hundred eighty-one thousand, three hundred forty-seven".