278025252553 has 2 divisors, whose sum is σ = 278025252554. Its totient is φ = 278025252552.

The previous prime is 278025252487. The next prime is 278025252577. The reversal of 278025252553 is 355252520872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141625774224 + 136399478329 = 376332^2 + 369323^2 .

It is a cyclic number.

It is not a de Polignac number, because 278025252553 - 2¹⁷ = 278025121481 is a prime.

It is not a weakly prime, because it can be changed into another prime (278025252653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139012626276 + 139012626277.

It is an arithmetic number, because the mean of its divisors is an integer number (139012626277).

Almost surely, 2^278025252553 is an apocalyptic number.

It is an amenable number.

278025252553 is a deficient number, since it is larger than the sum of its proper divisors (1).

278025252553 is an equidigital number, since it uses as much as digits as its factorization.

278025252553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680000, while the sum is 46.

The spelling of 278025252553 in words is "two hundred seventy-eight billion, twenty-five million, two hundred fifty-two thousand, five hundred fifty-three".