16425308425181 has 2 divisors, whose sum is σ = 16425308425182. Its totient is φ = 16425308425180.

The previous prime is 16425308425177. The next prime is 16425308425237. The reversal of 16425308425181 is 18152480352461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16291992159556 + 133316265625 = 4036334^2 + 365125^2 .

It is a cyclic number.

It is not a de Polignac number, because 16425308425181 - 2² = 16425308425177 is a prime.

It is a super-2 number, since 2×16425308425181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16425308425681) 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, 8212654212590 + 8212654212591.

It is an arithmetic number, because the mean of its divisors is an integer number (8212654212591).

Almost surely, 2^{16425308425181} is an apocalyptic number.

It is an amenable number.

16425308425181 is a deficient number, since it is larger than the sum of its proper divisors (1).

16425308425181 is an equidigital number, since it uses as much as digits as its factorization.

16425308425181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843200, while the sum is 50.

The spelling of 16425308425181 in words is "sixteen trillion, four hundred twenty-five billion, three hundred eight million, four hundred twenty-five thousand, one hundred eighty-one".