404725 has 6 divisors (see below), whose sum is σ = 501890. Its totient is φ = 323760.

The previous prime is 404713. The next prime is 404773. The reversal of 404725 is 527404.

It can be written as a sum of positive squares in 3 ways, for example, as 22801 + 381924 = 151^2 + 618^2 .

It is not a de Polignac number, because 404725 - 2⁵ = 404693 is a prime.

404725 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 404696 and 404705.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8070 + ... + 8119.

2⁴⁰⁴⁷²⁵ is an apocalyptic number.

It is an amenable number.

404725 is a deficient number, since it is larger than the sum of its proper divisors (97165).

404725 is a wasteful number, since it uses less digits than its factorization.

404725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16199 (or 16194 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 404725 is about 636.1800059732. The cubic root of 404725 is about 73.9696125538.

The spelling of 404725 in words is "four hundred four thousand, seven hundred twenty-five".