225215432 has 16 divisors (see below), whose sum is σ = 454762140. Its totient is φ = 103945536.

The previous prime is 225215429. The next prime is 225215453. The reversal of 225215432 is 234512522.

It can be written as a sum of positive squares in 2 ways, for example, as 175456516 + 49758916 = 13246^2 + 7054^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1082663 + ... + 1082870.

Almost surely, 2^225215432 is an apocalyptic number.

It is an amenable number.

225215432 is an abundant number, since it is smaller than the sum of its proper divisors (229546708).

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

225215432 is a wasteful number, since it uses less digits than its factorization.

225215432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165552 (or 2165548 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 225215432 is about 15007.1793485651. The cubic root of 225215432 is about 608.4142562935.

Adding to 225215432 its reverse (234512522), we get a palindrome (459727954).

The spelling of 225215432 in words is "two hundred twenty-five million, two hundred fifteen thousand, four hundred thirty-two".