125161868266 has 16 divisors (see below), whose sum is σ = 190884487968. Its totient is φ = 61534393200.

The previous prime is 125161868261. The next prime is 125161868267. The reversal of 125161868266 is 662868161521.

It is not an unprimeable number, because it can be changed into a prime (125161868261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196981 + ... + 537703.

It is an arithmetic number, because the mean of its divisors is an integer number (11930280498).

Almost surely, 2^125161868266 is an apocalyptic number.

125161868266 is a deficient number, since it is larger than the sum of its proper divisors (65722619702).

125161868266 is a wasteful number, since it uses less digits than its factorization.

125161868266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343797.

The product of its digits is 1658880, while the sum is 52.

The spelling of 125161868266 in words is "one hundred twenty-five billion, one hundred sixty-one million, eight hundred sixty-eight thousand, two hundred sixty-six".