4278725993 has 2 divisors, whose sum is σ = 4278725994. Its totient is φ = 4278725992.

The previous prime is 4278725977. The next prime is 4278726007. The reversal of 4278725993 is 3995278724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2782351504 + 1496374489 = 52748^2 + 38683^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278725993 - 2⁴ = 4278725977 is a prime.

It is a super-2 number, since 2×4278725993² = 36614992246347672098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4278725293) 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, 2139362996 + 2139362997.

It is an arithmetic number, because the mean of its divisors is an integer number (2139362997).

Almost surely, 2^4278725993 is an apocalyptic number.

It is an amenable number.

4278725993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278725993 is an equidigital number, since it uses as much as digits as its factorization.

4278725993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The square root of 4278725993 is about 65411.9713278846. The cubic root of 4278725993 is about 1623.4471626526.

The spelling of 4278725993 in words is "four billion, two hundred seventy-eight million, seven hundred twenty-five thousand, nine hundred ninety-three".