225176856578789 has 2 divisors, whose sum is σ = 225176856578790. Its totient is φ = 225176856578788.

The previous prime is 225176856578771. The next prime is 225176856578819. The reversal of 225176856578789 is 987875658671522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221445411005764 + 3731445573025 = 14881042^2 + 1931695^2 .

It is a cyclic number.

It is not a de Polignac number, because 225176856578789 - 2¹² = 225176856574693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225176856578789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225176856178789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112588428289394 + 112588428289395.

It is an arithmetic number, because the mean of its divisors is an integer number (112588428289395).

Almost surely, 2^{225176856578789} is an apocalyptic number.

It is an amenable number.

225176856578789 is a deficient number, since it is larger than the sum of its proper divisors (1).

225176856578789 is an equidigital number, since it uses as much as digits as its factorization.

225176856578789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28449792000, while the sum is 86.

The spelling of 225176856578789 in words is "two hundred twenty-five trillion, one hundred seventy-six billion, eight hundred fifty-six million, five hundred seventy-eight thousand, seven hundred eighty-nine".