425404404 has 36 divisors (see below), whose sum is σ = 1076302500. Its totient is φ = 141672960.

The previous prime is 425404403. The next prime is 425404411. The reversal of 425404404 is 404404524.

It is a happy number.

425404404 is a `hidden beast` number, since 4 + 254 + 0 + 4 + 404 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 249576804 + 175827600 = 15798^2 + 13260^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425404403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40234 + ... + 49694.

Almost surely, 2^425404404 is an apocalyptic number.

It is an amenable number.

425404404 is an abundant number, since it is smaller than the sum of its proper divisors (650898096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425404404 is a wasteful number, since it uses less digits than its factorization.

425404404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720 (or 10715 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 425404404 is about 20625.3340336587. The cubic root of 425404404 is about 752.0856931356.

Adding to 425404404 its reverse (404404524), we get a palindrome (829808928).

The spelling of 425404404 in words is "four hundred twenty-five million, four hundred four thousand, four hundred four".