2180725511 has 2 divisors, whose sum is σ = 2180725512. Its totient is φ = 2180725510.

The previous prime is 2180725489. The next prime is 2180725517. The reversal of 2180725511 is 1155270812.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180725511 is a prime.

It is a super-2 number, since 2×2180725511² = 9511127508652422242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180725517) 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, 1090362755 + 1090362756.

It is an arithmetic number, because the mean of its divisors is an integer number (1090362756).

Almost surely, 2^2180725511 is an apocalyptic number.

2180725511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180725511 is an equidigital number, since it uses as much as digits as its factorization.

2180725511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 2180725511 is about 46698.2388425945. The cubic root of 2180725511 is about 1296.7820828119.

The spelling of 2180725511 in words is "two billion, one hundred eighty million, seven hundred twenty-five thousand, five hundred eleven".