43221025 has 12 divisors (see below), whose sum is σ = 55924992. Its totient is φ = 33073040.

The previous prime is 43221019. The next prime is 43221041. The reversal of 43221025 is 52012234.

It is not a de Polignac number, because 43221025 - 2¹³ = 43212833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43220993 and 43221011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37009 + ... + 38158.

It is an arithmetic number, because the mean of its divisors is an integer number (4660416).

Almost surely, 2^43221025 is an apocalyptic number.

It is an amenable number.

43221025 is a deficient number, since it is larger than the sum of its proper divisors (12703967).

43221025 is a wasteful number, since it uses less digits than its factorization.

43221025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75200 (or 75195 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 43221025 is about 6574.2699214437. The cubic root of 43221025 is about 350.9390429394.

Adding to 43221025 its reverse (52012234), we get a palindrome (95233259).

The spelling of 43221025 in words is "forty-three million, two hundred twenty-one thousand, twenty-five".