420065425 has 12 divisors (see below), whose sum is σ = 560949340. Its totient is φ = 310201920.

The previous prime is 420065423. The next prime is 420065431. The reversal of 420065425 is 524560024.

It can be written as a sum of positive squares in 6 ways, for example, as 8300161 + 411765264 = 2881^2 + 20292^2 .

It is not a de Polignac number, because 420065425 - 2¹ = 420065423 is a prime.

It is a super-2 number, since 2×420065425² = 352909922560861250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420065393 and 420065402.

It is not an unprimeable number, because it can be changed into a prime (420065423) 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, 645930 + ... + 646579.

Almost surely, 2^420065425 is an apocalyptic number.

It is an amenable number.

420065425 is a deficient number, since it is larger than the sum of its proper divisors (140883915).

420065425 is a wasteful number, since it uses less digits than its factorization.

420065425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292532 (or 1292527 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 420065425 is about 20495.4976763191. The cubic root of 420065425 is about 748.9261223756.

The spelling of 420065425 in words is "four hundred twenty million, sixty-five thousand, four hundred twenty-five".