225451040 has 24 divisors (see below), whose sum is σ = 532628460. Its totient is φ = 90180352.

The previous prime is 225451019. The next prime is 225451043. The reversal of 225451040 is 40154522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 204032656 + 21418384 = 14284^2 + 4628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 225450997 and 225451015.

It is not an unprimeable number, because it can be changed into a prime (225451043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704375 + ... + 704694.

Almost surely, 2^225451040 is an apocalyptic number.

225451040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225451040 is an abundant number, since it is smaller than the sum of its proper divisors (307177420).

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

225451040 is a wasteful number, since it uses less digits than its factorization.

225451040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409084 (or 1409076 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 225451040 is about 15015.0271395026. The cubic root of 225451040 is about 608.6263455310.

The spelling of 225451040 in words is "two hundred twenty-five million, four hundred fifty-one thousand, forty".