409925 has 12 divisors (see below), whose sum is σ = 535680. Its totient is φ = 310320.

The previous prime is 409909. The next prime is 409933. The reversal of 409925 is 529904.

It is not a de Polignac number, because 409925 - 2⁴ = 409909 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 409925.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2⁴⁰⁹⁹²⁵ is an apocalyptic number.

It is an amenable number.

409925 is a deficient number, since it is larger than the sum of its proper divisors (125755).

409925 is a wasteful number, since it uses less digits than its factorization.

409925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 409925 is about 640.2538559040. The cubic root of 409925 is about 74.2850582853.

The spelling of 409925 in words is "four hundred nine thousand, nine hundred twenty-five".