125530051879 has 4 divisors (see below), whose sum is σ = 125544359560. Its totient is φ = 125515744200.

The previous prime is 125530051859. The next prime is 125530051909. The reversal of 125530051879 is 978150035521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125530051879 - 2²³ = 125521663271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125530051859) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7140672 + ... + 7158229.

It is an arithmetic number, because the mean of its divisors is an integer number (31386089890).

Almost surely, 2^125530051879 is an apocalyptic number.

125530051879 is a deficient number, since it is larger than the sum of its proper divisors (14307681).

125530051879 is an equidigital number, since it uses as much as digits as its factorization.

125530051879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14307680.

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 125530051879 in words is "one hundred twenty-five billion, five hundred thirty million, fifty-one thousand, eight hundred seventy-nine".