225140 has 12 divisors (see below), whose sum is σ = 472836. Its totient is φ = 90048.

The previous prime is 225133. The next prime is 225143. The reversal of 225140 is 41522.

It can be written as a sum of positive squares in 2 ways, for example, as 139876 + 85264 = 374^2 + 292^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5609 + ... + 5648.

It is an arithmetic number, because the mean of its divisors is an integer number (39403).

2²²⁵¹⁴⁰ is an apocalyptic number.

225140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225140 is an abundant number, since it is smaller than the sum of its proper divisors (247696).

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

225140 is a wasteful number, since it uses less digits than its factorization.

225140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11266 (or 11264 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 225140 is about 474.4891990341. The cubic root of 225140 is about 60.8346322777.

Adding to 225140 its reverse (41522), we get a palindrome (266662).

The spelling of 225140 in words is "two hundred twenty-five thousand, one hundred forty".