409425 has 24 divisors (see below), whose sum is σ = 696384. Its totient is φ = 212160.

The previous prime is 409397. The next prime is 409429. The reversal of 409425 is 524904.

It is not a de Polignac number, because 409425 - 2⁹ = 408913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 409395 and 409404.

It is not an unprimeable number, because it can be changed into a prime (409429) 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 23 ways as a sum of consecutive naturals, for example, 3924 + ... + 4026.

It is an arithmetic number, because the mean of its divisors is an integer number (29016).

2⁴⁰⁹⁴²⁵ is an apocalyptic number.

It is an amenable number.

409425 is a deficient number, since it is larger than the sum of its proper divisors (286959).

409425 is a wasteful number, since it uses less digits than its factorization.

409425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 409425 is about 639.8632666437. The cubic root of 409425 is about 74.2548432941.

The spelling of 409425 in words is "four hundred nine thousand, four hundred twenty-five".