225775836 has 180 divisors, whose sum is σ = 700238616. Its totient is φ = 63011520.

The previous prime is 225775801. The next prime is 225775877. The reversal of 225775836 is 638577522.

225775836 is a `hidden beast` number, since 22 + 577 + 58 + 3 + 6 = 666.

225775836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 225775791 and 225775800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 509431 + ... + 509873.

Almost surely, 2^225775836 is an apocalyptic number.

225775836 is a gapful number since it is divisible by the number (26) 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 225775836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350119308).

225775836 is an abundant number, since it is smaller than the sum of its proper divisors (474462780).

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

225775836 is a wasteful number, since it uses less digits than its factorization.

225775836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 472 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 225775836 is about 15025.8389449641. The cubic root of 225775836 is about 608.9184777674.

The spelling of 225775836 in words is "two hundred twenty-five million, seven hundred seventy-five thousand, eight hundred thirty-six".