43525413 has 6 divisors (see below), whose sum is σ = 62870054. Its totient is φ = 29016936.

The previous prime is 43525393. The next prime is 43525439. The reversal of 43525413 is 31452534.

It can be written as a sum of positive squares in only one way, i.e., 32012964 + 11512449 = 5658^2 + 3393^2 .

It is not a de Polignac number, because 43525413 - 2⁵ = 43525381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43525213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2418070 + ... + 2418087.

Almost surely, 2^43525413 is an apocalyptic number.

It is an amenable number.

43525413 is a deficient number, since it is larger than the sum of its proper divisors (19344641).

43525413 is a wasteful number, since it uses less digits than its factorization.

43525413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836163 (or 4836160 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 43525413 is about 6597.3792524002. The cubic root of 43525413 is about 351.7609565253.

Adding to 43525413 its reverse (31452534), we get a palindrome (74977947).

The spelling of 43525413 in words is "forty-three million, five hundred twenty-five thousand, four hundred thirteen".