1223912550125 has 36 divisors (see below), whose sum is σ = 1557640607796. Its totient is φ = 960141343200.

The previous prime is 1223912550109. The next prime is 1223912550169. The reversal of 1223912550125 is 5210552193221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 165653884036 + 1058258666089 = 407006^2 + 1028717^2 .

It is not a de Polignac number, because 1223912550125 - 2⁴ = 1223912550109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 655549442 + ... + 655551308.

It is an arithmetic number, because the mean of its divisors is an integer number (43267794661).

Almost surely, 2^{1223912550125} is an apocalyptic number.

It is an amenable number.

1223912550125 is a deficient number, since it is larger than the sum of its proper divisors (333728057671).

1223912550125 is an frugal number, since it uses more digits than its factorization.

1223912550125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855 (or 1925 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 1223912550125 in words is "one trillion, two hundred twenty-three billion, nine hundred twelve million, five hundred fifty thousand, one hundred twenty-five".