225540126 has 80 divisors (see below), whose sum is σ = 587537280. Its totient is φ = 63329040.

The previous prime is 225540113. The next prime is 225540137. The reversal of 225540126 is 621045522.

225540126 is a `hidden beast` number, since 2 + 255 + 401 + 2 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 225540126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 65221 + ... + 68591.

It is an arithmetic number, because the mean of its divisors is an integer number (7344216).

Almost surely, 2^225540126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225540126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293768640).

225540126 is an abundant number, since it is smaller than the sum of its proper divisors (361997154).

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

225540126 is a wasteful number, since it uses less digits than its factorization.

225540126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451 (or 3442 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 225540126 is about 15017.9934079091. The cubic root of 225540126 is about 608.7065003274.

Adding to 225540126 its reverse (621045522), we get a palindrome (846585648).

The spelling of 225540126 in words is "two hundred twenty-five million, five hundred forty thousand, one hundred twenty-six".