225500000 has 168 divisors, whose sum is σ = 620148312. Its totient is φ = 80000000.

The previous prime is 225499997. The next prime is 225500003. The reversal of 225500000 is 5522.

225500000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225499997) and next prime (225500003).

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225500003) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5499980 + ... + 5500020.

It is an arithmetic number, because the mean of its divisors is an integer number (3691359).

Almost surely, 2^225500000 is an apocalyptic number.

225500000 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 225500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310074156).

225500000 is an abundant number, since it is smaller than the sum of its proper divisors (394648312).

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

225500000 is an frugal number, since it uses more digits than its factorization.

225500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 225500000 is about 15016.6574176812. The cubic root of 225500000 is about 608.6703997214.

Adding to 225500000 its reverse (5522), we get a palindrome (225505522).

It can be divided in two parts, 22 and 5500000, that multiplied together give a square (121000000 = 11000²).

The spelling of 225500000 in words is "two hundred twenty-five million, five hundred thousand".