225125500 has 48 divisors (see below), whose sum is σ = 497296800. Its totient is φ = 89020800.

The previous prime is 225125491. The next prime is 225125531. The reversal of 225125500 is 5521522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41971 + ... + 47029.

It is an arithmetic number, because the mean of its divisors is an integer number (10360350).

Almost surely, 2^225125500 is an apocalyptic number.

225125500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225125500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248648400).

225125500 is an abundant number, since it is smaller than the sum of its proper divisors (272171300).

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

225125500 is a wasteful number, since it uses less digits than its factorization.

225125500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167 (or 5155 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 225125500 is about 15004.1827501534. The cubic root of 225125500 is about 608.3332624424. Note that the first 3 decimals are identical.

It can be divided in two parts, 225125 and 500, that added together give a square (225625 = 475²).

The spelling of 225125500 in words is "two hundred twenty-five million, one hundred twenty-five thousand, five hundred".