225405012 has 48 divisors (see below), whose sum is σ = 608706560. Its totient is φ = 63584352.

The previous prime is 225405007. The next prime is 225405017. The reversal of 225405012 is 210504522.

It is a happy number.

225405012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225405007) and next prime (225405017).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 225405012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225405017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10348 + ... + 23619.

Almost surely, 2^225405012 is an apocalyptic number.

It is an amenable number.

225405012 is an abundant number, since it is smaller than the sum of its proper divisors (383301548).

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

225405012 is a wasteful number, since it uses less digits than its factorization.

225405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34060 (or 34058 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 225405012 is about 15013.4943301018. The cubic root of 225405012 is about 608.5849237363.

Adding to 225405012 its reverse (210504522), we get a palindrome (435909534).

The spelling of 225405012 in words is "two hundred twenty-five million, four hundred five thousand, twelve".