405405325 has 12 divisors (see below), whose sum is σ = 541372468. Its totient is φ = 299376000.

The previous prime is 405405323. The next prime is 405405347. The reversal of 405405325 is 523504504.

It can be written as a sum of positive squares in 6 ways, for example, as 120538441 + 284866884 = 10979^2 + 16878^2 .

It is not a de Polignac number, because 405405325 - 2¹ = 405405323 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 405405293 and 405405302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405405323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623376 + ... + 624025.

Almost surely, 2^405405325 is an apocalyptic number.

It is an amenable number.

405405325 is a deficient number, since it is larger than the sum of its proper divisors (135967143).

405405325 is a wasteful number, since it uses less digits than its factorization.

405405325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247424 (or 1247419 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 405405325 is about 20134.6796597314. The cubic root of 405405325 is about 740.1103591192.

Adding to 405405325 its reverse (523504504), we get a palindrome (928909829).

The spelling of 405405325 in words is "four hundred five million, four hundred five thousand, three hundred twenty-five".