420020554225 has 24 divisors (see below), whose sum is σ = 552965107968. Its totient is φ = 315388934400.

The previous prime is 420020554211. The next prime is 420020554321. The reversal of 420020554225 is 522455020024.

It is not a de Polignac number, because 420020554225 - 2¹⁵ = 420020521457 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 1190461 + ... + 1502410.

It is an arithmetic number, because the mean of its divisors is an integer number (23040212832).

Almost surely, 2^420020554225 is an apocalyptic number.

It is an amenable number.

420020554225 is a deficient number, since it is larger than the sum of its proper divisors (132944553743).

420020554225 is a wasteful number, since it uses less digits than its factorization.

420020554225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693265 (or 2693260 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

Adding to 420020554225 its reverse (522455020024), we get a palindrome (942475574249).

The spelling of 420020554225 in words is "four hundred twenty billion, twenty million, five hundred fifty-four thousand, two hundred twenty-five".