225530740 has 12 divisors (see below), whose sum is σ = 473614596. Its totient is φ = 90212288.

The previous prime is 225530737. The next prime is 225530749. The reversal of 225530740 is 47035522.

It can be written as a sum of positive squares in 2 ways, for example, as 111767184 + 113763556 = 10572^2 + 10666^2 .

It is a super-2 number, since 2×225530740² = 101728229369895200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225530699 and 225530708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225530749) 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, 5638249 + ... + 5638288.

It is an arithmetic number, because the mean of its divisors is an integer number (39467883).

Almost surely, 2^225530740 is an apocalyptic number.

225530740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225530740 is an abundant number, since it is smaller than the sum of its proper divisors (248083856).

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

225530740 is a wasteful number, since it uses less digits than its factorization.

225530740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11276546 (or 11276544 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 225530740 is about 15017.6809128440. The cubic root of 225530740 is about 608.6980563037.

It can be divided in two parts, 225 and 530740, that added together give a triangular number (530965 = T₁₀₃₀).

The spelling of 225530740 in words is "two hundred twenty-five million, five hundred thirty thousand, seven hundred forty".