43125665 has 8 divisors (see below), whose sum is σ = 56455488. Its totient is φ = 31364080.

The previous prime is 43125661. The next prime is 43125673. The reversal of 43125665 is 56652134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43125665 - 2² = 43125661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43125661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391997 + ... + 392106.

It is an arithmetic number, because the mean of its divisors is an integer number (7056936).

Almost surely, 2^43125665 is an apocalyptic number.

It is an amenable number.

43125665 is a deficient number, since it is larger than the sum of its proper divisors (13329823).

43125665 is a wasteful number, since it uses less digits than its factorization.

43125665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784119.

The product of its digits is 21600, while the sum is 32.

The square root of 43125665 is about 6567.0134003213. The cubic root of 43125665 is about 350.6807566894.

Adding to 43125665 its reverse (56652134), we get a palindrome (99777799).

The spelling of 43125665 in words is "forty-three million, one hundred twenty-five thousand, six hundred sixty-five".