43115225 has 24 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 32721920.

The previous prime is 43115221. The next prime is 43115273. The reversal of 43115225 is 52251134.

43115225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43115225 - 2² = 43115221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 43115225.

It is not an unprimeable number, because it can be changed into a prime (43115221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95801 + ... + 96249.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^43115225 is an apocalyptic number.

It is an amenable number.

43115225 is a deficient number, since it is larger than the sum of its proper divisors (13131175).

43115225 is a wasteful number, since it uses less digits than its factorization.

43115225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 644 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 43115225 is about 6566.2184703222. The cubic root of 43115225 is about 350.6524564296.

Adding to 43115225 its reverse (52251134), we get a palindrome (95366359).

It can be divided in two parts, 4 and 3115225, that multiplied together give a square (12460900 = 3530²).

The spelling of 43115225 in words is "forty-three million, one hundred fifteen thousand, two hundred twenty-five".