405625064 has 32 divisors (see below), whose sum is σ = 822528000. Its totient is φ = 186416832.

The previous prime is 405625057. The next prime is 405625069. The reversal of 405625064 is 460526504.

It is a self number, because there is not a number n which added to its sum of digits gives 405625064.

It is not an unprimeable number, because it can be changed into a prime (405625069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16697 + ... + 33015.

It is an arithmetic number, because the mean of its divisors is an integer number (25704000).

Almost surely, 2^405625064 is an apocalyptic number.

It is an amenable number.

405625064 is an abundant number, since it is smaller than the sum of its proper divisors (416902936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405625064 is a wasteful number, since it uses less digits than its factorization.

405625064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16577 (or 16573 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 405625064 is about 20140.1356499900. The cubic root of 405625064 is about 740.2440539062.

The spelling of 405625064 in words is "four hundred five million, six hundred twenty-five thousand, sixty-four".