125112721175 has 24 divisors (see below), whose sum is σ = 167948417280. Its totient is φ = 91907164800.

The previous prime is 125112721169. The next prime is 125112721211. The reversal of 125112721175 is 571127211521.

It is not a de Polignac number, because 125112721175 - 2²⁸ = 124844285719 is a prime.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 945680 + ... + 1069829.

It is an arithmetic number, because the mean of its divisors is an integer number (6997850720).

Almost surely, 2^125112721175 is an apocalyptic number.

125112721175 is a deficient number, since it is larger than the sum of its proper divisors (42835696105).

125112721175 is a wasteful number, since it uses less digits than its factorization.

125112721175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015723 (or 2015718 counting only the distinct ones).

The product of its digits is 9800, while the sum is 35.

Adding to 125112721175 its reverse (571127211521), we get a palindrome (696239932696).

The spelling of 125112721175 in words is "one hundred twenty-five billion, one hundred twelve million, seven hundred twenty-one thousand, one hundred seventy-five".