278625041 has 2 divisors, whose sum is σ = 278625042. Its totient is φ = 278625040.

The previous prime is 278625023. The next prime is 278625047. The reversal of 278625041 is 140526872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266375041 + 12250000 = 16321^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 278625041 - 2¹⁴ = 278608657 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 278624992 and 278625010.

It is not a weakly prime, because it can be changed into another prime (278625047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139312520 + 139312521.

It is an arithmetic number, because the mean of its divisors is an integer number (139312521).

Almost surely, 2^278625041 is an apocalyptic number.

It is an amenable number.

278625041 is a deficient number, since it is larger than the sum of its proper divisors (1).

278625041 is an equidigital number, since it uses as much as digits as its factorization.

278625041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 278625041 is about 16692.0652107521. The cubic root of 278625041 is about 653.1406515361.

The spelling of 278625041 in words is "two hundred seventy-eight million, six hundred twenty-five thousand, forty-one".