225340520 has 16 divisors (see below), whose sum is σ = 507016260. Its totient is φ = 90136192.

The previous prime is 225340487. The next prime is 225340523. The reversal of 225340520 is 25043522.

It can be written as a sum of positive squares in 2 ways, for example, as 218507524 + 6832996 = 14782^2 + 2614^2 .

It is not an unprimeable number, because it can be changed into a prime (225340523) 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, 2816717 + ... + 2816796.

Almost surely, 2^225340520 is an apocalyptic number.

225340520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225340520 is an abundant number, since it is smaller than the sum of its proper divisors (281675740).

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

225340520 is a wasteful number, since it uses less digits than its factorization.

225340520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633524 (or 5633520 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 225340520 is about 15011.3463753256. The cubic root of 225340520 is about 608.5268762209.

The spelling of 225340520 in words is "two hundred twenty-five million, three hundred forty thousand, five hundred twenty".