404425 has 12 divisors (see below), whose sum is σ = 573376. Its totient is φ = 277200.

The previous prime is 404423. The next prime is 404429. The reversal of 404425 is 524404.

It is not a de Polignac number, because 404425 - 2¹ = 404423 is a prime.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981 + ... + 1330.

2⁴⁰⁴⁴²⁵ is an apocalyptic number.

It is an amenable number.

404425 is a deficient number, since it is larger than the sum of its proper divisors (168951).

404425 is a wasteful number, since it uses less digits than its factorization.

404425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2323 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 404425 is about 635.9441799403. The cubic root of 404425 is about 73.9513315243.

Adding to 404425 its reverse (524404), we get a palindrome (928829).

It can be divided in two parts, 40 and 4425, that added together give a triangular number (4465 = T₉₄).

The spelling of 404425 in words is "four hundred four thousand, four hundred twenty-five".