125401660556 has 48 divisors (see below), whose sum is σ = 234246823776. Its totient is φ = 58534539264.

The previous prime is 125401660537. The next prime is 125401660603. The reversal of 125401660556 is 655066104521.

125401660556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13289216 + ... + 13298648.

It is an arithmetic number, because the mean of its divisors is an integer number (4880142162).

Almost surely, 2^125401660556 is an apocalyptic number.

It is an amenable number.

125401660556 is a deficient number, since it is larger than the sum of its proper divisors (108845163220).

125401660556 is a wasteful number, since it uses less digits than its factorization.

125401660556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11018 (or 11016 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 125401660556 in words is "one hundred twenty-five billion, four hundred one million, six hundred sixty thousand, five hundred fifty-six".