43216525 has 24 divisors (see below), whose sum is σ = 60487200. Its totient is φ = 30340800.

The previous prime is 43216489. The next prime is 43216627. The reversal of 43216525 is 52561234.

It is not a de Polignac number, because 43216525 - 2¹⁷ = 43085453 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 43216493 and 43216502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5266 + ... + 10684.

It is an arithmetic number, because the mean of its divisors is an integer number (2520300).

Almost surely, 2^43216525 is an apocalyptic number.

It is an amenable number.

43216525 is a deficient number, since it is larger than the sum of its proper divisors (17270675).

43216525 is a wasteful number, since it uses less digits than its factorization.

43216525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469 (or 5464 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 43216525 is about 6573.9276692096. The cubic root of 43216525 is about 350.9268630609.

Adding to 43216525 its reverse (52561234), we get a palindrome (95777759).

The spelling of 43216525 in words is "forty-three million, two hundred sixteen thousand, five hundred twenty-five".