43494025 has 9 divisors (see below), whose sum is σ = 53973511. Its totient is φ = 34768840.

The previous prime is 43494019. The next prime is 43494043. The reversal of 43494025 is 52049434.

It is a happy number.

The square root of 43494025 is 6595.

It is a perfect power (a square), and thus also a powerful number.

43494025 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 only one way, i.e., 15657849 + 27836176 = 3957^2 + 5276^2 .

It is not a de Polignac number, because 43494025 - 2¹³ = 43485833 is a prime.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 32316 + ... + 33634.

Almost surely, 2^43494025 is an apocalyptic number.

43494025 is the 6595-th square number.

43494025 is the 3298-th centered octagonal number.

It is an amenable number.

43494025 is a deficient number, since it is larger than the sum of its proper divisors (10479486).

43494025 is an frugal number, since it uses more digits than its factorization.

43494025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The cubic root of 43494025 is about 351.6763796673.

The spelling of 43494025 in words is "forty-three million, four hundred ninety-four thousand, twenty-five".