225323730 has 24 divisors (see below), whose sum is σ = 585841932. Its totient is φ = 60086304.

The previous prime is 225323719. The next prime is 225323737. The reversal of 225323730 is 37323522.

It can be written as a sum of positive squares in 2 ways, for example, as 184606569 + 40717161 = 13587^2 + 6381^2 .

It is a super-2 number, since 2×225323730² = 101541566602225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225323694 and 225323703.

It is not an unprimeable number, because it can be changed into a prime (225323737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1251709 + ... + 1251888.

Almost surely, 2^225323730 is an apocalyptic number.

225323730 is an abundant number, since it is smaller than the sum of its proper divisors (360518202).

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

225323730 is a wasteful number, since it uses less digits than its factorization.

225323730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503610 (or 2503607 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 225323730 is about 15010.7871212672. The cubic root of 225323730 is about 608.5117621763.

It can be divided in two parts, 22532 and 3730, that added together give a palindrome (26262).

The spelling of 225323730 in words is "two hundred twenty-five million, three hundred twenty-three thousand, seven hundred thirty".