420025522 has 16 divisors (see below), whose sum is σ = 722092032. Its totient is φ = 179498880.

The previous prime is 420025481. The next prime is 420025537. The reversal of 420025522 is 225520024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420025493 and 420025502.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37554 + ... + 47437.

It is an arithmetic number, because the mean of its divisors is an integer number (45130752).

Almost surely, 2^420025522 is an apocalyptic number.

420025522 is a deficient number, since it is larger than the sum of its proper divisors (302066510).

420025522 is a wasteful number, since it uses less digits than its factorization.

420025522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85353.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 420025522 is about 20494.5241955016. The cubic root of 420025522 is about 748.9024075417.

Adding to 420025522 its reverse (225520024), we get a palindrome (645545546).

It can be divided in two parts, 42002 and 5522, that added together give a square (47524 = 218²).

The spelling of 420025522 in words is "four hundred twenty million, twenty-five thousand, five hundred twenty-two".