404221325 has 12 divisors (see below), whose sum is σ = 530719380. Its totient is φ = 304354560.

The previous prime is 404221289. The next prime is 404221339. The reversal of 404221325 is 523122404.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 54493924 + 349727401 = 7382^2 + 18701^2 .

It is not a de Polignac number, because 404221325 - 2⁶ = 404221261 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404221325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475130 + ... + 475979.

It is an arithmetic number, because the mean of its divisors is an integer number (44226615).

Almost surely, 2^404221325 is an apocalyptic number.

It is an amenable number.

404221325 is a deficient number, since it is larger than the sum of its proper divisors (126498055).

404221325 is a wasteful number, since it uses less digits than its factorization.

404221325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951136 (or 951131 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 404221325 is about 20105.2561535535. The cubic root of 404221325 is about 739.3891507574.

Adding to 404221325 its reverse (523122404), we get a palindrome (927343729).

The spelling of 404221325 in words is "four hundred four million, two hundred twenty-one thousand, three hundred twenty-five".