225012789 has 8 divisors (see below), whose sum is σ = 333352320. Its totient is φ = 150008508.

The previous prime is 225012727. The next prime is 225012793. The reversal of 225012789 is 987210522.

It is not a de Polignac number, because 225012789 - 2⁷ = 225012661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225012709) 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, 4166877 + ... + 4166930.

It is an arithmetic number, because the mean of its divisors is an integer number (41669040).

Almost surely, 2^225012789 is an apocalyptic number.

It is an amenable number.

225012789 is a deficient number, since it is larger than the sum of its proper divisors (108339531).

225012789 is an equidigital number, since it uses as much as digits as its factorization.

225012789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333816 (or 8333810 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 225012789 is about 15000.4262939424. The cubic root of 225012789 is about 608.2317230844.

The spelling of 225012789 in words is "two hundred twenty-five million, twelve thousand, seven hundred eighty-nine".