405222325 has 24 divisors (see below), whose sum is σ = 522957600. Its totient is φ = 311223360.

The previous prime is 405222313. The next prime is 405222331. The reversal of 405222325 is 523222504.

It is a happy number.

It is not a de Polignac number, because 405222325 - 2²⁷ = 271004597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 405222325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60231 + ... + 66619.

It is an arithmetic number, because the mean of its divisors is an integer number (21789900).

Almost surely, 2^405222325 is an apocalyptic number.

It is an amenable number.

405222325 is a deficient number, since it is larger than the sum of its proper divisors (117735275).

405222325 is a wasteful number, since it uses less digits than its factorization.

405222325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501 (or 6496 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 405222325 is about 20130.1347486797. The cubic root of 405222325 is about 739.9989803979.

Adding to 405222325 its reverse (523222504), we get a palindrome (928444829).

The spelling of 405222325 in words is "four hundred five million, two hundred twenty-two thousand, three hundred twenty-five".