404145425 has 6 divisors (see below), whose sum is σ = 501140358. Its totient is φ = 323316320.

The previous prime is 404145389. The next prime is 404145439. The reversal of 404145425 is 524541404.

It can be written as a sum of positive squares in 3 ways, for example, as 134397649 + 269747776 = 11593^2 + 16424^2 .

It is not a de Polignac number, because 404145425 - 2⁶ = 404145361 is a prime.

It is a Duffinian 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, 8082884 + ... + 8082933.

It is an arithmetic number, because the mean of its divisors is an integer number (83523393).

Almost surely, 2^404145425 is an apocalyptic number.

It is an amenable number.

404145425 is a deficient number, since it is larger than the sum of its proper divisors (96994933).

404145425 is a wasteful number, since it uses less digits than its factorization.

404145425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16165827 (or 16165822 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 404145425 is about 20103.3684988362. The cubic root of 404145425 is about 739.3428698828.

Adding to 404145425 its reverse (524541404), we get a palindrome (928686829).

The spelling of 404145425 in words is "four hundred four million, one hundred forty-five thousand, four hundred twenty-five".