252780255557 has 2 divisors, whose sum is σ = 252780255558. Its totient is φ = 252780255556.

The previous prime is 252780255509. The next prime is 252780255569. The reversal of 252780255557 is 755552087252.

252780255557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252761584516 + 18671041 = 502754^2 + 4321^2 .

It is a cyclic number.

It is not a de Polignac number, because 252780255557 - 2¹² = 252780251461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252780255499 and 252780255508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252780255587) 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, 126390127778 + 126390127779.

It is an arithmetic number, because the mean of its divisors is an integer number (126390127779).

Almost surely, 2^252780255557 is an apocalyptic number.

It is an amenable number.

252780255557 is a deficient number, since it is larger than the sum of its proper divisors (1).

252780255557 is an equidigital number, since it uses as much as digits as its factorization.

252780255557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800000, while the sum is 53.

The spelling of 252780255557 in words is "two hundred fifty-two billion, seven hundred eighty million, two hundred fifty-five thousand, five hundred fifty-seven".