4200420525 has 24 divisors (see below), whose sum is σ = 7936795584. Its totient is φ = 1920192000.

The previous prime is 4200420509. The next prime is 4200420527. The reversal of 4200420525 is 5250240024.

It is a happy number.

It is not a de Polignac number, because 4200420525 - 2⁴ = 4200420509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4200420495 and 4200420504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200420527) by changing a digit.

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, 3999876 + ... + 4000925.

It is an arithmetic number, because the mean of its divisors is an integer number (330699816).

Almost surely, 2^4200420525 is an apocalyptic number.

It is an amenable number.

4200420525 is a deficient number, since it is larger than the sum of its proper divisors (3736375059).

4200420525 is a wasteful number, since it uses less digits than its factorization.

4200420525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000821 (or 8000816 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 4200420525 is about 64810.6513236829. The cubic root of 4200420525 is about 1613.4824924085.

Adding to 4200420525 its reverse (5250240024), we get a palindrome (9450660549).

The spelling of 4200420525 in words is "four billion, two hundred million, four hundred twenty thousand, five hundred twenty-five".