125670166887 has 16 divisors (see below), whose sum is σ = 169249979520. Its totient is φ = 82936379232.

The previous prime is 125670166847. The next prime is 125670166891. The reversal of 125670166887 is 788661076521.

It is a happy number.

It is not a de Polignac number, because 125670166887 - 2⁷ = 125670166759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125670166847) 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 15 ways as a sum of consecutive naturals, for example, 298164 + ... + 583302.

It is an arithmetic number, because the mean of its divisors is an integer number (10578123720).

Almost surely, 2^125670166887 is an apocalyptic number.

125670166887 is a deficient number, since it is larger than the sum of its proper divisors (43579812633).

125670166887 is a wasteful number, since it uses less digits than its factorization.

125670166887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286622.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 125670166887 in words is "one hundred twenty-five billion, six hundred seventy million, one hundred sixty-six thousand, eight hundred eighty-seven".