225123216 has 40 divisors (see below), whose sum is σ = 590256864. Its totient is φ = 73920000.

The previous prime is 225123131. The next prime is 225123221. The reversal of 225123216 is 612321522.

225123216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31785 + ... + 38216.

Almost surely, 2^225123216 is an apocalyptic number.

It is an amenable number.

225123216 is an abundant number, since it is smaller than the sum of its proper divisors (365133648).

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

225123216 is a wasteful number, since it uses less digits than its factorization.

225123216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70079 (or 70073 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 225123216 is about 15004.1066378509. The cubic root of 225123216 is about 608.3312051634.

Adding to 225123216 its reverse (612321522), we get a palindrome (837444738).

The spelling of 225123216 in words is "two hundred twenty-five million, one hundred twenty-three thousand, two hundred sixteen".