215231425252 has 12 divisors (see below), whose sum is σ = 376659319680. Its totient is φ = 107614476776.

The previous prime is 215231425223. The next prime is 215231425271. The reversal of 215231425252 is 252524132512.

215231425252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 162993 + ... + 676039.

It is an arithmetic number, because the mean of its divisors is an integer number (31388276640).

Almost surely, 2^215231425252 is an apocalyptic number.

It is an amenable number.

215231425252 is a deficient number, since it is larger than the sum of its proper divisors (161427894428).

215231425252 is a wasteful number, since it uses less digits than its factorization.

215231425252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617930 (or 617928 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

Adding to 215231425252 its reverse (252524132512), we get a palindrome (467755557764).

The spelling of 215231425252 in words is "two hundred fifteen billion, two hundred thirty-one million, four hundred twenty-five thousand, two hundred fifty-two".