43420625 has 10 divisors (see below), whose sum is σ = 54259194. Its totient is φ = 34736000.

The previous prime is 43420613. The next prime is 43420649. The reversal of 43420625 is 52602434.

43420625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 15499969 + 27920656 = 3937^2 + 5284^2 .

It is not a de Polignac number, because 43420625 - 2¹⁰ = 43419601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43420594 and 43420603.

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 9 ways as a sum of consecutive naturals, for example, 34112 + ... + 35361.

Almost surely, 2^43420625 is an apocalyptic number.

It is an amenable number.

43420625 is a deficient number, since it is larger than the sum of its proper divisors (10838569).

43420625 is an frugal number, since it uses more digits than its factorization.

43420625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69493 (or 69478 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 43420625 is about 6589.4328284003. The cubic root of 43420625 is about 351.4784399848.

The spelling of 43420625 in words is "forty-three million, four hundred twenty thousand, six hundred twenty-five".