251272228027 has 2 divisors, whose sum is σ = 251272228028. Its totient is φ = 251272228026.

The previous prime is 251272228021. The next prime is 251272228159. The reversal of 251272228027 is 720822272152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251272228027 - 2³⁵ = 216912489659 is a prime.

It is not a weakly prime, because it can be changed into another prime (251272228021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125636114013 + 125636114014.

It is an arithmetic number, because the mean of its divisors is an integer number (125636114014).

Almost surely, 2^251272228027 is an apocalyptic number.

251272228027 is a deficient number, since it is larger than the sum of its proper divisors (1).

251272228027 is an equidigital number, since it uses as much as digits as its factorization.

251272228027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 251272228027 in words is "two hundred fifty-one billion, two hundred seventy-two million, two hundred twenty-eight thousand, twenty-seven".