5625409 has 4 divisors (see below), whose sum is σ = 5870016. Its totient is φ = 5380804.

The previous prime is 5625407. The next prime is 5625421. The reversal of 5625409 is 9045265.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5625409 - 2¹ = 5625407 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5625407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122269 + ... + 122314.

It is an arithmetic number, because the mean of its divisors is an integer number (1467504).

Almost surely, 2^5625409 is an apocalyptic number.

It is an amenable number.

5625409 is a deficient number, since it is larger than the sum of its proper divisors (244607).

5625409 is a wasteful number, since it uses less digits than its factorization.

5625409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244606.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5625409 is about 2371.7944683298. The cubic root of 5625409 is about 177.8489755478.

The spelling of 5625409 in words is "five million, six hundred twenty-five thousand, four hundred nine".