2771925649 has 2 divisors, whose sum is σ = 2771925650. Its totient is φ = 2771925648.

The previous prime is 2771925631. The next prime is 2771925679. The reversal of 2771925649 is 9465291772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2645250624 + 126675025 = 51432^2 + 11255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2771925649 - 2⁵ = 2771925617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2771925596 and 2771925605.

It is not a weakly prime, because it can be changed into another prime (2771925679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385962824 + 1385962825.

It is an arithmetic number, because the mean of its divisors is an integer number (1385962825).

Almost surely, 2^2771925649 is an apocalyptic number.

It is an amenable number.

2771925649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771925649 is an equidigital number, since it uses as much as digits as its factorization.

2771925649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 2771925649 is about 52649.0802293829. The cubic root of 2771925649 is about 1404.7332394599.

The spelling of 2771925649 in words is "two billion, seven hundred seventy-one million, nine hundred twenty-five thousand, six hundred forty-nine".