125818009868 has 48 divisors (see below), whose sum is σ = 238891633344. Its totient is φ = 57746933760.

The previous prime is 125818009831. The next prime is 125818009873. The reversal of 125818009868 is 868900818521.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15868121 + ... + 15876047.

It is an arithmetic number, because the mean of its divisors is an integer number (4976909028).

Almost surely, 2^125818009868 is an apocalyptic number.

It is an amenable number.

125818009868 is a deficient number, since it is larger than the sum of its proper divisors (113073623476).

125818009868 is a wasteful number, since it uses less digits than its factorization.

125818009868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13682 (or 13680 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 56.

The spelling of 125818009868 in words is "one hundred twenty-five billion, eight hundred eighteen million, nine thousand, eight hundred sixty-eight".