225475000 has 96 divisors (see below), whose sum is σ = 548402400. Its totient is φ = 86800000.

The previous prime is 225474989. The next prime is 225475007. The reversal of 225475000 is 574522.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225475007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 724845 + ... + 725155.

It is an arithmetic number, because the mean of its divisors is an integer number (5712525).

Almost surely, 2^225475000 is an apocalyptic number.

225475000 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 225475000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274201200).

225475000 is an abundant number, since it is smaller than the sum of its proper divisors (322927400).

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

225475000 is an equidigital number, since it uses as much as digits as its factorization.

225475000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 225475000 is about 15015.8249856610. The cubic root of 225475000 is about 608.6479055272.

The spelling of 225475000 in words is "two hundred twenty-five million, four hundred seventy-five thousand".