43166225 has 24 divisors (see below), whose sum is σ = 55121472. Its totient is φ = 33521600.

The previous prime is 43166209. The next prime is 43166231. The reversal of 43166225 is 52266134.

It is not a de Polignac number, because 43166225 - 2⁴ = 43166209 is a prime.

It is a Duffinian number.

It is a Curzon 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, 147179 + ... + 147471.

It is an arithmetic number, because the mean of its divisors is an integer number (2296728).

Almost surely, 2^43166225 is an apocalyptic number.

It is an amenable number.

43166225 is a deficient number, since it is larger than the sum of its proper divisors (11955247).

43166225 is a wasteful number, since it uses less digits than its factorization.

43166225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 452 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 43166225 is about 6570.1008363647. The cubic root of 43166225 is about 350.7906615043.

Subtracting 43166225 from its reverse (52266134), we obtain a palindrome (9099909).

The spelling of 43166225 in words is "forty-three million, one hundred sixty-six thousand, two hundred twenty-five".