43216173225 has 27 divisors (see below), whose sum is σ = 77410553623. Its totient is φ = 23046962640.

The previous prime is 43216173181. The next prime is 43216173251. The reversal of 43216173225 is 52237161234.

The square root of 43216173225 is 207885.

It is a perfect power (a square), and thus also a powerful number.

43216173225 is a `hidden beast` number, since 4 + 3 + 2 + 1 + 617 + 32 + 2 + 5 = 666.

43216173225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15557822361 + 27658350864 = 124731^2 + 166308^2 .

It is not a de Polignac number, because 43216173225 - 2⁷ = 43216173097 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 43216173225.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3111346 + ... + 3125204.

Almost surely, 2^43216173225 is an apocalyptic number.

43216173225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43216173225 is the 207885-th square number.

43216173225 is the 103943-rd centered octagonal number.

It is an amenable number.

43216173225 is a deficient number, since it is larger than the sum of its proper divisors (34194380398).

43216173225 is an frugal number, since it uses more digits than its factorization.

43216173225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27734 (or 13867 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

Multiplying 43216173225 by its sum of digits (36), we get a square (1555782236100 = 1247310²).

The spelling of 43216173225 in words is "forty-three billion, two hundred sixteen million, one hundred seventy-three thousand, two hundred twenty-five".