2725322981 has 2 divisors, whose sum is σ = 2725322982. Its totient is φ = 2725322980.

The previous prime is 2725322959. The next prime is 2725322983. The reversal of 2725322981 is 1892235272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2138230081 + 587092900 = 46241^2 + 24230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725322981 - 2³⁰ = 1651581157 is a prime.

It is a super-2 number, since 2×2725322981² = 14854770701533452722, which contains 22 as substring.

Together with 2725322983, 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 (2725322983) 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, 1362661490 + 1362661491.

It is an arithmetic number, because the mean of its divisors is an integer number (1362661491).

Almost surely, 2^2725322981 is an apocalyptic number.

It is an amenable number.

2725322981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725322981 is an equidigital number, since it uses as much as digits as its factorization.

2725322981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 2725322981 is about 52204.6260498052. The cubic root of 2725322981 is about 1396.8164022157.

The spelling of 2725322981 in words is "two billion, seven hundred twenty-five million, three hundred twenty-two thousand, nine hundred eighty-one".