122815564125 has 32 divisors (see below), whose sum is σ = 204774960000. Its totient is φ = 65370268800.

The previous prime is 122815564073. The next prime is 122815564141. The reversal of 122815564125 is 521465518221.

It is not a de Polignac number, because 122815564125 - 2⁸ = 122815563869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141040 + ... + 515289.

It is an arithmetic number, because the mean of its divisors is an integer number (6399217500).

Almost surely, 2^122815564125 is an apocalyptic number.

122815564125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122815564125 is a deficient number, since it is larger than the sum of its proper divisors (81959395875).

122815564125 is an equidigital number, since it uses as much as digits as its factorization.

122815564125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656846 (or 656836 counting only the distinct ones).

The product of its digits is 192000, while the sum is 42.

The spelling of 122815564125 in words is "one hundred twenty-two billion, eight hundred fifteen million, five hundred sixty-four thousand, one hundred twenty-five".