30925457161 has 2 divisors, whose sum is σ = 30925457162. Its totient is φ = 30925457160.

The previous prime is 30925457137. The next prime is 30925457209. The reversal of 30925457161 is 16175452903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16013383936 + 14912073225 = 126544^2 + 122115^2 .

It is a cyclic number.

It is not a de Polignac number, because 30925457161 - 2⁷ = 30925457033 is a prime.

It is not a weakly prime, because it can be changed into another prime (30925457131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15462728580 + 15462728581.

It is an arithmetic number, because the mean of its divisors is an integer number (15462728581).

Almost surely, 2^30925457161 is an apocalyptic number.

It is an amenable number.

30925457161 is a deficient number, since it is larger than the sum of its proper divisors (1).

30925457161 is an equidigital number, since it uses as much as digits as its factorization.

30925457161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 30925457161 in words is "thirty billion, nine hundred twenty-five million, four hundred fifty-seven thousand, one hundred sixty-one".