420143554225 has 12 divisors (see below), whose sum is σ = 520993035760. Its totient is φ = 336105147600.

The previous prime is 420143554177. The next prime is 420143554261. The reversal of 420143554225 is 522455341024.

It is not a de Polignac number, because 420143554225 - 2¹¹ = 420143552177 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 715870 + ... + 1163080.

Almost surely, 2^420143554225 is an apocalyptic number.

It is an amenable number.

420143554225 is a deficient number, since it is larger than the sum of its proper divisors (100849481535).

420143554225 is a wasteful number, since it uses less digits than its factorization.

420143554225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484800 (or 484795 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 420143554225 its reverse (522455341024), we get a palindrome (942598895249).

The spelling of 420143554225 in words is "four hundred twenty billion, one hundred forty-three million, five hundred fifty-four thousand, two hundred twenty-five".