124221165725 has 6 divisors (see below), whose sum is σ = 154034245530. Its totient is φ = 99376932560.

The previous prime is 124221165667. The next prime is 124221165737. The reversal of 124221165725 is 527561122421.

It can be written as a sum of positive squares in 3 ways, for example, as 34651450201 + 89569715524 = 186149^2 + 299282^2 .

It is not a de Polignac number, because 124221165725 - 2²⁴ = 124204388509 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 2484423290 + ... + 2484423339.

It is an arithmetic number, because the mean of its divisors is an integer number (25672374255).

Almost surely, 2^124221165725 is an apocalyptic number.

It is an amenable number.

124221165725 is a deficient number, since it is larger than the sum of its proper divisors (29813079805).

124221165725 is an equidigital number, since it uses as much as digits as its factorization.

124221165725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968846639 (or 4968846634 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The spelling of 124221165725 in words is "one hundred twenty-four billion, two hundred twenty-one million, one hundred sixty-five thousand, seven hundred twenty-five".