43540925 has 12 divisors (see below), whose sum is σ = 54073920. Its totient is φ = 34779120.

The previous prime is 43540883. The next prime is 43540969. The reversal of 43540925 is 52904534.

It is a happy number.

43540925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-43540925 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 43540891 and 43540900.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26786 + ... + 28364.

It is an arithmetic number, because the mean of its divisors is an integer number (4506160).

Almost surely, 2^43540925 is an apocalyptic number.

It is an amenable number.

43540925 is a deficient number, since it is larger than the sum of its proper divisors (10532995).

43540925 is a wasteful number, since it uses less digits than its factorization.

43540925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692 (or 2687 counting only the distinct ones).

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

The square root of 43540925 is about 6598.5547660075. The cubic root of 43540925 is about 351.8027395320.

The spelling of 43540925 in words is "forty-three million, five hundred forty thousand, nine hundred twenty-five".