225831000 has 64 divisors (see below), whose sum is σ = 704602080. Its totient is φ = 60220800.

The previous prime is 225830987. The next prime is 225831007. The reversal of 225831000 is 138522.

225831000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×225831000² = 101999281122000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225831007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34639 + ... + 40638.

Almost surely, 2^225831000 is an apocalyptic number.

225831000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225831000 is an abundant number, since it is smaller than the sum of its proper divisors (478771080).

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

225831000 is a wasteful number, since it uses less digits than its factorization.

225831000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75301 (or 75287 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 225831000 is about 15027.6744707889. The cubic root of 225831000 is about 608.9680662503.

Adding to 225831000 its reverse (138522), we get a palindrome (225969522).

The spelling of 225831000 in words is "two hundred twenty-five million, eight hundred thirty-one thousand".