405445125 has 32 divisors (see below), whose sum is σ = 696443904. Its totient is φ = 209256000.

The previous prime is 405445099. The next prime is 405445133. The reversal of 405445125 is 521544504.

It is not a de Polignac number, because 405445125 - 2¹⁶ = 405379589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405445092 and 405445101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5814 + ... + 29063.

It is an arithmetic number, because the mean of its divisors is an integer number (21763872).

Almost surely, 2^405445125 is an apocalyptic number.

It is an amenable number.

405445125 is a deficient number, since it is larger than the sum of its proper divisors (290998779).

405445125 is a wasteful number, since it uses less digits than its factorization.

405445125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34926 (or 34916 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 405445125 is about 20135.6679799802. The cubic root of 405445125 is about 740.1345780318.

Adding to 405445125 its reverse (521544504), we get a palindrome (926989629).

The spelling of 405445125 in words is "four hundred five million, four hundred forty-five thousand, one hundred twenty-five".