404125012 has 12 divisors (see below), whose sum is σ = 710810100. Its totient is φ = 201036416.

The previous prime is 404124997. The next prime is 404125031. The reversal of 404125012 is 210521404.

It can be written as a sum of positive squares in 2 ways, for example, as 263607696 + 140517316 = 16236^2 + 11854^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255637 + ... + 257212.

It is an arithmetic number, because the mean of its divisors is an integer number (59234175).

Almost surely, 2^404125012 is an apocalyptic number.

It is an amenable number.

404125012 is a deficient number, since it is larger than the sum of its proper divisors (306685088).

404125012 is a wasteful number, since it uses less digits than its factorization.

404125012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513050 (or 513048 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 404125012 is about 20102.8607914396. The cubic root of 404125012 is about 739.3304218387.

Adding to 404125012 its reverse (210521404), we get a palindrome (614646416).

The spelling of 404125012 in words is "four hundred four million, one hundred twenty-five thousand, twelve".