225143120 has 40 divisors (see below), whose sum is σ = 524357064. Its totient is φ = 89902592.

The previous prime is 225143089. The next prime is 225143129. The reversal of 225143120 is 21341522.

225143120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 83247376 + 141895744 = 9124^2 + 11912^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 225143092 and 225143101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225143129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52082 + ... + 56238.

Almost surely, 2^225143120 is an apocalyptic number.

225143120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225143120 is an abundant number, since it is smaller than the sum of its proper divisors (299213944).

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

225143120 is a wasteful number, since it uses less digits than its factorization.

225143120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847 (or 4841 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 225143120 is about 15004.7699082658. The cubic root of 225143120 is about 608.3491329272.

Adding to 225143120 its reverse (21341522), we get a palindrome (246484642).

The spelling of 225143120 in words is "two hundred twenty-five million, one hundred forty-three thousand, one hundred twenty".