125668197 has 6 divisors (see below), whose sum is σ = 181520742. Its totient is φ = 83778792.

The previous prime is 125668181. The next prime is 125668211. The reversal of 125668197 is 791866521.

125668197 is a `hidden beast` number, since 1 + 2 + 566 + 81 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120428676 + 5239521 = 10974^2 + 2289^2 .

It is not a de Polignac number, because 125668197 - 2⁴ = 125668181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125668597) 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 in 5 ways as a sum of consecutive naturals, for example, 6981558 + ... + 6981575.

It is an arithmetic number, because the mean of its divisors is an integer number (30253457).

Almost surely, 2^125668197 is an apocalyptic number.

It is an amenable number.

125668197 is a deficient number, since it is larger than the sum of its proper divisors (55852545).

125668197 is a wasteful number, since it uses less digits than its factorization.

125668197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13963139 (or 13963136 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 125668197 is about 11210.1827371368. The cubic root of 125668197 is about 500.8893465210.

The spelling of 125668197 in words is "one hundred twenty-five million, six hundred sixty-eight thousand, one hundred ninety-seven".