405530025 has 24 divisors (see below), whose sum is σ = 671709984. Its totient is φ = 215884800.

The previous prime is 405530017. The next prime is 405530039. The reversal of 405530025 is 520035504.

It is not a de Polignac number, because 405530025 - 2³ = 405530017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405529977 and 405530004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38590 + ... + 47960.

It is an arithmetic number, because the mean of its divisors is an integer number (27987916).

Almost surely, 2^405530025 is an apocalyptic number.

It is an amenable number.

405530025 is a deficient number, since it is larger than the sum of its proper divisors (266179959).

405530025 is a wasteful number, since it uses less digits than its factorization.

405530025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961 (or 9956 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 405530025 is about 20137.7760688712. The cubic root of 405530025 is about 740.1862356925.

Adding to 405530025 its reverse (520035504), we get a palindrome (925565529).

The spelling of 405530025 in words is "four hundred five million, five hundred thirty thousand, twenty-five".