225240000 has 140 divisors (see below), whose sum is σ = 745092744. Its totient is φ = 60032000.

The previous prime is 225239969. The next prime is 225240007. The reversal of 225240000 is 42522.

225240000 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 (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225240007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119062 + ... + 120938.

Almost surely, 2^225240000 is an apocalyptic number.

225240000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372546372).

225240000 is an abundant number, since it is smaller than the sum of its proper divisors (519852744).

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

225240000 is an equidigital number, since it uses as much as digits as its factorization.

225240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 225240000 is about 15007.9978678037. The cubic root of 225240000 is about 608.4363787828.

Adding to 225240000 its reverse (42522), we get a palindrome (225282522).

The spelling of 225240000 in words is "two hundred twenty-five million, two hundred forty thousand".