125894131779 has 48 divisors (see below), whose sum is σ = 182738494464. Its totient is φ = 77059382400.

The previous prime is 125894131777. The next prime is 125894131813. The reversal of 125894131779 is 977131498521.

It is not a de Polignac number, because 125894131779 - 2¹ = 125894131777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125894131777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127036974 + ... + 127037964.

It is an arithmetic number, because the mean of its divisors is an integer number (3807051968).

Almost surely, 2^125894131779 is an apocalyptic number.

125894131779 is a deficient number, since it is larger than the sum of its proper divisors (56844362685).

125894131779 is a wasteful number, since it uses less digits than its factorization.

125894131779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2095 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 57.

The spelling of 125894131779 in words is "one hundred twenty-five billion, eight hundred ninety-four million, one hundred thirty-one thousand, seven hundred seventy-nine".