420005425 has 12 divisors (see below), whose sum is σ = 595207936. Its totient is φ = 288003600.

The previous prime is 420005423. The next prime is 420005437. The reversal of 420005425 is 524500024.

It is not a de Polignac number, because 420005425 - 2¹ = 420005423 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420005396 and 420005405.

It is not an unprimeable number, because it can be changed into a prime (420005423) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1199841 + ... + 1200190.

Almost surely, 2^420005425 is an apocalyptic number.

It is an amenable number.

420005425 is a deficient number, since it is larger than the sum of its proper divisors (175202511).

420005425 is a wasteful number, since it uses less digits than its factorization.

420005425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400048 (or 2400043 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 420005425 is about 20494.0338879392. The cubic root of 420005425 is about 748.8904630836.

Adding to 420005425 its reverse (524500024), we get a palindrome (944505449).

The spelling of 420005425 in words is "four hundred twenty million, five thousand, four hundred twenty-five".