2585529649 has 2 divisors, whose sum is σ = 2585529650. Its totient is φ = 2585529648.

The previous prime is 2585529641. The next prime is 2585529691. The reversal of 2585529649 is 9469255852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2210410225 + 375119424 = 47015^2 + 19368^2 .

It is a cyclic number.

It is not a de Polignac number, because 2585529649 - 2³ = 2585529641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2585529649.

It is not a weakly prime, because it can be changed into another prime (2585529641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292764824 + 1292764825.

It is an arithmetic number, because the mean of its divisors is an integer number (1292764825).

Almost surely, 2^2585529649 is an apocalyptic number.

It is an amenable number.

2585529649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585529649 is an equidigital number, since it uses as much as digits as its factorization.

2585529649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 55.

The square root of 2585529649 is about 50848.1036912882. The cubic root of 2585529649 is about 1372.5131289395.

The spelling of 2585529649 in words is "two billion, five hundred eighty-five million, five hundred twenty-nine thousand, six hundred forty-nine".