420541425 has 18 divisors (see below), whose sum is σ = 753236822. Its totient is φ = 224288640.

The previous prime is 420541423. The next prime is 420541447. The reversal of 420541425 is 524145024.

It can be written as a sum of positive squares in 3 ways, for example, as 39237696 + 381303729 = 6264^2 + 19527^2 .

It is not a de Polignac number, because 420541425 - 2¹ = 420541423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420541423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 934312 + ... + 934761.

Almost surely, 2^420541425 is an apocalyptic number.

420541425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420541425 is a deficient number, since it is larger than the sum of its proper divisors (332695397).

420541425 is a wasteful number, since it uses less digits than its factorization.

420541425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869089 (or 1869081 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 420541425 is about 20507.1066949972. The cubic root of 420541425 is about 749.2088991727.

Adding to 420541425 its reverse (524145024), we get a palindrome (944686449).

The spelling of 420541425 in words is "four hundred twenty million, five hundred forty-one thousand, four hundred twenty-five".