2725590821 has 2 divisors, whose sum is σ = 2725590822. Its totient is φ = 2725590820.

The previous prime is 2725590809. The next prime is 2725590823. The reversal of 2725590821 is 1280955272.

2725590821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2078448100 + 647142721 = 45590^2 + 25439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725590821 - 2¹⁴ = 2725574437 is a prime.

Together with 2725590823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2725590823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362795410 + 1362795411.

It is an arithmetic number, because the mean of its divisors is an integer number (1362795411).

Almost surely, 2^2725590821 is an apocalyptic number.

It is an amenable number.

2725590821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725590821 is an equidigital number, since it uses as much as digits as its factorization.

2725590821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 2725590821 is about 52207.1912766814. The cubic root of 2725590821 is about 1396.8621596118.

The spelling of 2725590821 in words is "two billion, seven hundred twenty-five million, five hundred ninety thousand, eight hundred twenty-one".