125578125789 has 8 divisors (see below), whose sum is σ = 167627128032. Its totient is φ = 83623937040.

The previous prime is 125578125781. The next prime is 125578125811. The reversal of 125578125789 is 987521875521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125578125789 - 2³ = 125578125781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125578125781) 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 7 ways as a sum of consecutive naturals, for example, 23700282 + ... + 23705579.

It is an arithmetic number, because the mean of its divisors is an integer number (20953391004).

Almost surely, 2^125578125789 is an apocalyptic number.

It is an amenable number.

125578125789 is a deficient number, since it is larger than the sum of its proper divisors (42049002243).

125578125789 is an equidigital number, since it uses as much as digits as its factorization.

125578125789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47406747.

The product of its digits is 14112000, while the sum is 60.

The spelling of 125578125789 in words is "one hundred twenty-five billion, five hundred seventy-eight million, one hundred twenty-five thousand, seven hundred eighty-nine".