225782500 has 30 divisors (see below), whose sum is σ = 493746638. Its totient is φ = 90312000.

The previous prime is 225782483. The next prime is 225782507. The reversal of 225782500 is 5287522.

It can be written as a sum of positive squares in 5 ways, for example, as 173132964 + 52649536 = 13158^2 + 7256^2 .

It is not an unprimeable number, because it can be changed into a prime (225782507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42657 + ... + 47656.

Almost surely, 2^225782500 is an apocalyptic number.

225782500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225782500 is an abundant number, since it is smaller than the sum of its proper divisors (267964138).

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

225782500 is an equidigital number, since it uses as much as digits as its factorization.

225782500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90337 (or 90320 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 225782500 is about 15026.0606946731. The cubic root of 225782500 is about 608.9244686547.

The spelling of 225782500 in words is "two hundred twenty-five million, seven hundred eighty-two thousand, five hundred".