43720325 has 36 divisors (see below), whose sum is σ = 60608100. Its totient is φ = 31257600.

The previous prime is 43720319. The next prime is 43720351. The reversal of 43720325 is 52302734.

43720325 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 6 ways, for example, as 6180196 + 37540129 = 2486^2 + 6127^2 .

It is not a de Polignac number, because 43720325 - 2¹⁰ = 43719301 is a prime.

It is a super-2 number, since 2×43720325² = 3822933636211250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43720294 and 43720303.

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 35 ways as a sum of consecutive naturals, for example, 293351 + ... + 293499.

Almost surely, 2^43720325 is an apocalyptic number.

It is an amenable number.

43720325 is a deficient number, since it is larger than the sum of its proper divisors (16887775).

43720325 is a wasteful number, since it uses less digits than its factorization.

43720325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 43720325 is about 6612.1346779992. The cubic root of 43720325 is about 352.2852505497.

The spelling of 43720325 in words is "forty-three million, seven hundred twenty thousand, three hundred twenty-five".