43512225 has 12 divisors (see below), whose sum is σ = 71940336. Its totient is φ = 23206480.

The previous prime is 43512211. The next prime is 43512229. The reversal of 43512225 is 52221534.

It is not a de Polignac number, because 43512225 - 2⁷ = 43512097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43512195 and 43512204.

It is not an unprimeable number, because it can be changed into a prime (43512229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290007 + ... + 290156.

It is an arithmetic number, because the mean of its divisors is an integer number (5995028).

Almost surely, 2^43512225 is an apocalyptic number.

It is an amenable number.

43512225 is a deficient number, since it is larger than the sum of its proper divisors (28428111).

43512225 is a wasteful number, since it uses less digits than its factorization.

43512225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580176 (or 580171 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 43512225 is about 6596.3796888900. The cubic root of 43512225 is about 351.7254256191.

Adding to 43512225 its reverse (52221534), we get a palindrome (95733759).

The spelling of 43512225 in words is "forty-three million, five hundred twelve thousand, two hundred twenty-five".