225215524 has 24 divisors (see below), whose sum is σ = 418037760. Its totient is φ = 105799296.

The previous prime is 225215521. The next prime is 225215539. The reversal of 225215524 is 425512522.

It is a junction number, because it is equal to n+sod(n) for n = 225215492 and 225215501.

It is not an unprimeable number, because it can be changed into a prime (225215521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41437 + ... + 46555.

It is an arithmetic number, because the mean of its divisors is an integer number (17418240).

Almost surely, 2^225215524 is an apocalyptic number.

It is an amenable number.

225215524 is a deficient number, since it is larger than the sum of its proper divisors (192822236).

225215524 is a wasteful number, since it uses less digits than its factorization.

225215524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5787 (or 5785 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 225215524 is about 15007.1824137644. The cubic root of 225215524 is about 608.4143391388.

The spelling of 225215524 in words is "two hundred twenty-five million, two hundred fifteen thousand, five hundred twenty-four".