4421129646125 has 16 divisors (see below), whose sum is σ = 5519004651264. Its totient is φ = 3535983939600.

The previous prime is 4421129646121. The next prime is 4421129646137. The reversal of 4421129646125 is 5216469211244.

It is not a de Polignac number, because 4421129646125 - 2² = 4421129646121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4421129646125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421129646121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116089 + ... + 5077838.

It is an arithmetic number, because the mean of its divisors is an integer number (344937790704).

Almost surely, 2^{4421129646125} is an apocalyptic number.

It is an amenable number.

4421129646125 is a deficient number, since it is larger than the sum of its proper divisors (1097875005139).

4421129646125 is an equidigital number, since it uses as much as digits as its factorization.

4421129646125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197789 (or 9197779 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The spelling of 4421129646125 in words is "four trillion, four hundred twenty-one billion, one hundred twenty-nine million, six hundred forty-six thousand, one hundred twenty-five".