125706557072 has 20 divisors (see below), whose sum is σ = 249220559280. Its totient is φ = 61391574048.

The previous prime is 125706557071. The next prime is 125706557087. The reversal of 125706557072 is 270755607521.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (125706557071) 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 3 ways as a sum of consecutive naturals, for example, 91355822 + ... + 91357197.

It is an arithmetic number, because the mean of its divisors is an integer number (12461027964).

Almost surely, 2^125706557072 is an apocalyptic number.

It is an amenable number.

125706557072 is a deficient number, since it is larger than the sum of its proper divisors (123514002208).

125706557072 is a wasteful number, since it uses less digits than its factorization.

125706557072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182713070 (or 182713064 counting only the distinct ones).

The product of its (nonzero) digits is 1029000, while the sum is 47.

The spelling of 125706557072 in words is "one hundred twenty-five billion, seven hundred six million, five hundred fifty-seven thousand, seventy-two".