2725698649 has 2 divisors, whose sum is σ = 2725698650. Its totient is φ = 2725698648.

The previous prime is 2725698631. The next prime is 2725698727. The reversal of 2725698649 is 9468965272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1733889600 + 991809049 = 41640^2 + 31493^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725698649 - 2⁵ = 2725698617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2725698593 and 2725698602.

It is not a weakly prime, because it can be changed into another prime (2725698949) 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, 1362849324 + 1362849325.

It is an arithmetic number, because the mean of its divisors is an integer number (1362849325).

Almost surely, 2^2725698649 is an apocalyptic number.

It is an amenable number.

2725698649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725698649 is an equidigital number, since it uses as much as digits as its factorization.

2725698649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The square root of 2725698649 is about 52208.2239594491. The cubic root of 2725698649 is about 1396.8805799442.

The spelling of 2725698649 in words is "two billion, seven hundred twenty-five million, six hundred ninety-eight thousand, six hundred forty-nine".