125163091 has 2 divisors, whose sum is σ = 125163092. Its totient is φ = 125163090.

The previous prime is 125163053. The next prime is 125163107. The reversal of 125163091 is 190361521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125163091 - 2⁷ = 125162963 is a prime.

It is not a weakly prime, because it can be changed into another prime (125163001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62581545 + 62581546.

It is an arithmetic number, because the mean of its divisors is an integer number (62581546).

Almost surely, 2^125163091 is an apocalyptic number.

125163091 is a deficient number, since it is larger than the sum of its proper divisors (1).

125163091 is an equidigital number, since it uses as much as digits as its factorization.

125163091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 125163091 is about 11187.6311612423. The cubic root of 125163091 is about 500.2173601621.

It can be divided in two parts, 125 and 163091, that added together give a square (163216 = 404²).

The spelling of 125163091 in words is "one hundred twenty-five million, one hundred sixty-three thousand, ninety-one".