405225221204 has 6 divisors (see below), whose sum is σ = 709144137114. Its totient is φ = 202612610600.

The previous prime is 405225221183. The next prime is 405225221209. The reversal of 405225221204 is 402122522504.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 367551187600 + 37674033604 = 606260^2 + 194098^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405225221209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50653152647 + ... + 50653152654.

It is an arithmetic number, because the mean of its divisors is an integer number (118190689519).

Almost surely, 2^405225221204 is an apocalyptic number.

It is an amenable number.

405225221204 is a deficient number, since it is larger than the sum of its proper divisors (303918915910).

405225221204 is a wasteful number, since it uses less digits than its factorization.

405225221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101306305305 (or 101306305303 counting only the distinct ones).

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

Adding to 405225221204 its reverse (402122522504), we get a palindrome (807347743708).

The spelling of 405225221204 in words is "four hundred five billion, two hundred twenty-five million, two hundred twenty-one thousand, two hundred four".