225297830 has 8 divisors (see below), whose sum is σ = 405536112. Its totient is φ = 90119128.

The previous prime is 225297823. The next prime is 225297833. The reversal of 225297830 is 38792522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×225297830² = 101518224405417800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225297833) 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, 11264882 + ... + 11264901.

It is an arithmetic number, because the mean of its divisors is an integer number (50692014).

Almost surely, 2^225297830 is an apocalyptic number.

225297830 is a deficient number, since it is larger than the sum of its proper divisors (180238282).

225297830 is a wasteful number, since it uses less digits than its factorization.

225297830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22529790.

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

The square root of 225297830 is about 15009.9243835537. The cubic root of 225297830 is about 608.4884460072.

The spelling of 225297830 in words is "two hundred twenty-five million, two hundred ninety-seven thousand, eight hundred thirty".