420330625 has 40 divisors (see below), whose sum is σ = 617202432. Its totient is φ = 282120000.

The previous prime is 420330607. The next prime is 420330641. The reversal of 420330625 is 526033024.

It is a happy number.

It is not a de Polignac number, because 420330625 - 2¹⁷ = 420199553 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 420330625.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 87024 + ... + 91726.

Almost surely, 2^420330625 is an apocalyptic number.

It is an amenable number.

420330625 is a deficient number, since it is larger than the sum of its proper divisors (196871807).

420330625 is a wasteful number, since it uses less digits than its factorization.

420330625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 420330625 is about 20501.9663691071. The cubic root of 420330625 is about 749.0836957862.

Adding to 420330625 its reverse (526033024), we get a palindrome (946363649).

The spelling of 420330625 in words is "four hundred twenty million, three hundred thirty thousand, six hundred twenty-five".