225540200 has 24 divisors (see below), whose sum is σ = 524381430. Its totient is φ = 90216000.

The previous prime is 225540191. The next prime is 225540209. The reversal of 225540200 is 2045522.

225540200 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 (225540191) and next prime (225540209).

It can be written as a sum of positive squares in 3 ways, for example, as 88322404 + 137217796 = 9398^2 + 11714^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (225540209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 563651 + ... + 564050.

Almost surely, 2^225540200 is an apocalyptic number.

225540200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225540200 is an abundant number, since it is smaller than the sum of its proper divisors (298841230).

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

225540200 is a wasteful number, since it uses less digits than its factorization.

225540200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127717 (or 1127708 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 225540200 is about 15017.9958716202. The cubic root of 225540200 is about 608.7065668998.

Adding to 225540200 its reverse (2045522), we get a palindrome (227585722).

The spelling of 225540200 in words is "two hundred twenty-five million, five hundred forty thousand, two hundred".