405522424252 has 24 divisors (see below), whose sum is σ = 787300859520. Its totient is φ = 181204163760.

The previous prime is 405522424249. The next prime is 405522424283. The reversal of 405522424252 is 252424225504.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 78102648 + ... + 78107839.

It is an arithmetic number, because the mean of its divisors is an integer number (32804202480).

Almost surely, 2^405522424252 is an apocalyptic number.

It is an amenable number.

405522424252 is a deficient number, since it is larger than the sum of its proper divisors (381778435268).

405522424252 is a wasteful number, since it uses less digits than its factorization.

405522424252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156210561 (or 156210559 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

Adding to 405522424252 its reverse (252424225504), we get a palindrome (657946649756).

The spelling of 405522424252 in words is "four hundred five billion, five hundred twenty-two million, four hundred twenty-four thousand, two hundred fifty-two".