405002025 has 72 divisors (see below), whose sum is σ = 758736160. Its totient is φ = 214151040.

The previous prime is 405001981. The next prime is 405002047. The reversal of 405002025 is 520200504.

It is not a de Polignac number, because 405002025 - 2¹³ = 404993833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405001989 and 405002007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 990021 + ... + 990429.

Almost surely, 2^405002025 is an apocalyptic number.

405002025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

405002025 is a deficient number, since it is larger than the sum of its proper divisors (353734135).

405002025 is a wasteful number, since it uses less digits than its factorization.

405002025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 405002025 is about 20124.6621089647. The cubic root of 405002025 is about 739.8648554031.

Adding to 405002025 its reverse (520200504), we get a palindrome (925202529).

The spelling of 405002025 in words is "four hundred five million, two thousand, twenty-five".