420521325 has 24 divisors (see below), whose sum is σ = 794586048. Its totient is φ = 192238080.

The previous prime is 420521273. The next prime is 420521327. The reversal of 420521325 is 523125024.

It is not a de Polignac number, because 420521325 - 2⁹ = 420520813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420521295 and 420521304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420521327) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 399972 + ... + 401021.

It is an arithmetic number, because the mean of its divisors is an integer number (33107752).

Almost surely, 2^420521325 is an apocalyptic number.

It is an amenable number.

420521325 is a deficient number, since it is larger than the sum of its proper divisors (374064723).

420521325 is a wasteful number, since it uses less digits than its factorization.

420521325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801013 (or 801008 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 420521325 is about 20506.6166151318. The cubic root of 420521325 is about 749.1969627039.

Adding to 420521325 its reverse (523125024), we get a palindrome (943646349).

The spelling of 420521325 in words is "four hundred twenty million, five hundred twenty-one thousand, three hundred twenty-five".