215225132 has 12 divisors (see below), whose sum is σ = 379139376. Its totient is φ = 106899600.

The previous prime is 215225123. The next prime is 215225147. The reversal of 215225132 is 231522512.

It is a junction number, because it is equal to n+sod(n) for n = 215225098 and 215225107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177563 + ... + 178770.

It is an arithmetic number, because the mean of its divisors is an integer number (31594948).

Almost surely, 2^215225132 is an apocalyptic number.

It is an amenable number.

215225132 is a deficient number, since it is larger than the sum of its proper divisors (163914244).

215225132 is a wasteful number, since it uses less digits than its factorization.

215225132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356488 (or 356486 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 215225132 is about 14670.5532274690. The cubic root of 215225132 is about 599.2816699761.

Adding to 215225132 its reverse (231522512), we get a palindrome (446747644).

The spelling of 215225132 in words is "two hundred fifteen million, two hundred twenty-five thousand, one hundred thirty-two".