4425521212 has 24 divisors (see below), whose sum is σ = 8852713856. Its totient is φ = 1896293808.

The previous prime is 4425521203. The next prime is 4425521213. The reversal of 4425521212 is 2121255244.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425521213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181243 + ... + 204205.

Almost surely, 2^4425521212 is an apocalyptic number.

It is an amenable number.

4425521212 is an abundant number, since it is smaller than the sum of its proper divisors (4427192644).

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

4425521212 is a wasteful number, since it uses less digits than its factorization.

4425521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29857 (or 29855 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 4425521212 is about 66524.5910321890. The cubic root of 4425521212 is about 1641.8046281039.

Adding to 4425521212 its reverse (2121255244), we get a palindrome (6546776456).

The spelling of 4425521212 in words is "four billion, four hundred twenty-five million, five hundred twenty-one thousand, two hundred twelve".