125943161 has 2 divisors, whose sum is σ = 125943162. Its totient is φ = 125943160.

The previous prime is 125943043. The next prime is 125943179. The reversal of 125943161 is 161349521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86955625 + 38987536 = 9325^2 + 6244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125943161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125942161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62971580 + 62971581.

It is an arithmetic number, because the mean of its divisors is an integer number (62971581).

Almost surely, 2^125943161 is an apocalyptic number.

It is an amenable number.

125943161 is a deficient number, since it is larger than the sum of its proper divisors (1).

125943161 is an equidigital number, since it uses as much as digits as its factorization.

125943161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 125943161 is about 11222.4400644423. The cubic root of 125943161 is about 501.2543983379.

The spelling of 125943161 in words is "one hundred twenty-five million, nine hundred forty-three thousand, one hundred sixty-one".