405125405 has 8 divisors (see below), whose sum is σ = 486259200. Its totient is φ = 324027856.

The previous prime is 405125401. The next prime is 405125431. The reversal of 405125405 is 504521504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405125405 - 2² = 405125401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405125401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35156 + ... + 45234.

It is an arithmetic number, because the mean of its divisors is an integer number (60782400).

Almost surely, 2^405125405 is an apocalyptic number.

It is an amenable number.

405125405 is a deficient number, since it is larger than the sum of its proper divisors (81133795).

405125405 is a wasteful number, since it uses less digits than its factorization.

405125405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18123.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 405125405 is about 20127.7272686213. The cubic root of 405125405 is about 739.9399786965.

Adding to 405125405 its reverse (504521504), we get a palindrome (909646909).

The spelling of 405125405 in words is "four hundred five million, one hundred twenty-five thousand, four hundred five".