420545525 has 12 divisors (see below), whose sum is σ = 548923200. Its totient is φ = 318728880.

The previous prime is 420545483. The next prime is 420545539. The reversal of 420545525 is 525545024.

It is a de Polignac number, because none of the positive numbers 2^k-420545525 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420545491 and 420545500.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 442205 + ... + 443154.

It is an arithmetic number, because the mean of its divisors is an integer number (45743600).

Almost surely, 2^420545525 is an apocalyptic number.

It is an amenable number.

420545525 is a deficient number, since it is larger than the sum of its proper divisors (128377675).

420545525 is a wasteful number, since it uses less digits than its factorization.

420545525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885388 (or 885383 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 420545525 is about 20507.2066600988. The cubic root of 420545525 is about 749.2113339281.

The spelling of 420545525 in words is "four hundred twenty million, five hundred forty-five thousand, five hundred twenty-five".