125644978103 has 8 divisors (see below), whose sum is σ = 130490688240. Its totient is φ = 120875578560.

The previous prime is 125644978087. The next prime is 125644978133. The reversal of 125644978103 is 301879446521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 125644978103 - 2⁴ = 125644978087 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 (125644978133) 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, 19074293 + ... + 19080878.

It is an arithmetic number, because the mean of its divisors is an integer number (16311336030).

It is a 1-persistent number, because it is pandigital, but 2⋅125644978103 = 251289956206 is not.

Almost surely, 2^125644978103 is an apocalyptic number.

125644978103 is a deficient number, since it is larger than the sum of its proper divisors (4845710137).

125644978103 is an equidigital number, since it uses as much as digits as its factorization.

125644978103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38155297.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 125644978103 in words is "one hundred twenty-five billion, six hundred forty-four million, nine hundred seventy-eight thousand, one hundred three".