125771656 has 16 divisors (see below), whose sum is σ = 237680640. Its totient is φ = 62390160.

The previous prime is 125771647. The next prime is 125771669. The reversal of 125771656 is 656177521.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 60880 + ... + 62911.

It is an arithmetic number, because the mean of its divisors is an integer number (14855040).

Almost surely, 2^125771656 is an apocalyptic number.

It is an amenable number.

125771656 is a deficient number, since it is larger than the sum of its proper divisors (111908984).

125771656 is a wasteful number, since it uses less digits than its factorization.

125771656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123924 (or 123920 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 125771656 is about 11214.7962977488. The cubic root of 125771656 is about 501.0267647318.

The spelling of 125771656 in words is "one hundred twenty-five million, seven hundred seventy-one thousand, six hundred fifty-six".