405125432 has 48 divisors (see below), whose sum is σ = 793210320. Its totient is φ = 193939200.

The previous prime is 405125431. The next prime is 405125437. The reversal of 405125432 is 234521504.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405125431) 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 11 ways as a sum of consecutive naturals, for example, 777332 + ... + 777852.

It is an arithmetic number, because the mean of its divisors is an integer number (16525215).

Almost surely, 2^405125432 is an apocalyptic number.

It is an amenable number.

405125432 is a deficient number, since it is larger than the sum of its proper divisors (388084888).

405125432 is a wasteful number, since it uses less digits than its factorization.

405125432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 405125432 is about 20127.7279393378. The cubic root of 405125432 is about 739.9399951345.

Adding to 405125432 its reverse (234521504), we get a palindrome (639646936).

The spelling of 405125432 in words is "four hundred five million, one hundred twenty-five thousand, four hundred thirty-two".