43223878125 has 60 divisors (see below), whose sum is σ = 80706561012. Its totient is φ = 23052600000.

The previous prime is 43223878091. The next prime is 43223878129. The reversal of 43223878125 is 52187832234.

43223878125 is a `hidden beast` number, since 432 + 23 + 8 + 78 + 125 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 35850392964 + 7373485161 = 189342^2 + 85869^2 .

It is not a de Polignac number, because 43223878125 - 2¹⁰ = 43223877101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43223878129) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 167745 + ... + 338505.

Almost surely, 2^43223878125 is an apocalyptic number.

43223878125 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43223878125 is a deficient number, since it is larger than the sum of its proper divisors (37482682887).

43223878125 is an frugal number, since it uses more digits than its factorization.

43223878125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170798 (or 170769 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 43223878125 in words is "forty-three billion, two hundred twenty-three million, eight hundred seventy-eight thousand, one hundred twenty-five".