405125424 has 90 divisors (see below), whose sum is σ = 1246283948. Its totient is φ = 122760000.

The previous prime is 405125401. The next prime is 405125431. The reversal of 405125424 is 424521504.

405125424 is a `hidden beast` number, since 405 + 1 + 254 + 2 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5799 + ... + 29049.

Almost surely, 2^405125424 is an apocalyptic number.

405125424 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405125424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623141974).

405125424 is an abundant number, since it is smaller than the sum of its proper divisors (841158524).

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

405125424 is a wasteful number, since it uses less digits than its factorization.

405125424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23287 (or 23267 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 405125424 is about 20127.7277406070. The cubic root of 405125424 is about 739.9399902640.

Adding to 405125424 its reverse (424521504), we get a palindrome (829646928).

The spelling of 405125424 in words is "four hundred five million, one hundred twenty-five thousand, four hundred twenty-four".