225003440 has 40 divisors (see below), whose sum is σ = 525421728. Its totient is φ = 89607680.

The previous prime is 225003421. The next prime is 225003463. The reversal of 225003440 is 44300522.

225003440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12605 + ... + 24675.

Almost surely, 2^225003440 is an apocalyptic number.

225003440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225003440 is an abundant number, since it is smaller than the sum of its proper divisors (300418288).

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

225003440 is a wasteful number, since it uses less digits than its factorization.

225003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12317 (or 12311 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 225003440 is about 15000.1146662284. The cubic root of 225003440 is about 608.2232992119.

Adding to 225003440 its reverse (44300522), we get a palindrome (269303962).

The spelling of 225003440 in words is "two hundred twenty-five million, three thousand, four hundred forty".