225329780 has 24 divisors (see below), whose sum is σ = 509592552. Its totient is φ = 83198592.

The previous prime is 225329779. The next prime is 225329801. The reversal of 225329780 is 87923522.

225329780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 209764 + 225120016 = 458^2 + 15004^2 .

It is a congruent number.

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, 433067 + ... + 433586.

It is an arithmetic number, because the mean of its divisors is an integer number (21233023).

Almost surely, 2^225329780 is an apocalyptic number.

225329780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225329780 is an abundant number, since it is smaller than the sum of its proper divisors (284262772).

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

225329780 is a wasteful number, since it uses less digits than its factorization.

225329780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866675 (or 866673 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 225329780 is about 15010.9886416585. The cubic root of 225329780 is about 608.5172083599.

The spelling of 225329780 in words is "two hundred twenty-five million, three hundred twenty-nine thousand, seven hundred eighty".