255122140145881 has 2 divisors, whose sum is σ = 255122140145882. Its totient is φ = 255122140145880.

The previous prime is 255122140145879. The next prime is 255122140145893. The reversal of 255122140145881 is 188541041221552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155174133385881 + 99948006760000 = 12456891^2 + 9997400^2 .

It is a cyclic number.

It is not a de Polignac number, because 255122140145881 - 2¹ = 255122140145879 is a prime.

It is a super-2 number, since 2×255122140145881² (a number of 30 digits) contains 22 as substring.

Together with 255122140145879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (255122140143881) 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, 127561070072940 + 127561070072941.

It is an arithmetic number, because the mean of its divisors is an integer number (127561070072941).

Almost surely, 2^{255122140145881} is an apocalyptic number.

It is an amenable number.

255122140145881 is a deficient number, since it is larger than the sum of its proper divisors (1).

255122140145881 is an equidigital number, since it uses as much as digits as its factorization.

255122140145881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024000, while the sum is 49.

The spelling of 255122140145881 in words is "two hundred fifty-five trillion, one hundred twenty-two billion, one hundred forty million, one hundred forty-five thousand, eight hundred eighty-one".