278252825251 has 2 divisors, whose sum is σ = 278252825252. Its totient is φ = 278252825250.

The previous prime is 278252825237. The next prime is 278252825269. The reversal of 278252825251 is 152528252872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 278252825251 - 2²⁷ = 278118607523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 278252825195 and 278252825204.

It is not a weakly prime, because it can be changed into another prime (278252825351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139126412625 + 139126412626.

It is an arithmetic number, because the mean of its divisors is an integer number (139126412626).

Almost surely, 2^278252825251 is an apocalyptic number.

278252825251 is a deficient number, since it is larger than the sum of its proper divisors (1).

278252825251 is an equidigital number, since it uses as much as digits as its factorization.

278252825251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792000, while the sum is 49.

The spelling of 278252825251 in words is "two hundred seventy-eight billion, two hundred fifty-two million, eight hundred twenty-five thousand, two hundred fifty-one".