522225420 has 48 divisors (see below), whose sum is σ = 1467045888. Its totient is φ = 138801600.

The previous prime is 522225409. The next prime is 522225427. The reversal of 522225420 is 24522225.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (522225427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4245 + ... + 32595.

It is an arithmetic number, because the mean of its divisors is an integer number (30563456).

Almost surely, 2^522225420 is an apocalyptic number.

It is an amenable number.

522225420 is an abundant number, since it is smaller than the sum of its proper divisors (944820468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

522225420 is a wasteful number, since it uses less digits than its factorization.

522225420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28670 (or 28668 counting only the distinct ones).

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

The square root of 522225420 is about 22852.2519678040. The cubic root of 522225420 is about 805.2906734203.

Adding to 522225420 its reverse (24522225), we get a palindrome (546747645).

The spelling of 522225420 in words is "five hundred twenty-two million, two hundred twenty-five thousand, four hundred twenty".