225867136 has 64 divisors (see below), whose sum is σ = 516772800. Its totient is φ = 97251840.

The previous prime is 225867127. The next prime is 225867143. The reversal of 225867136 is 631768522.

225867136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22531 + ... + 30973.

It is an arithmetic number, because the mean of its divisors is an integer number (8074575).

Almost surely, 2^225867136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225867136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258386400).

225867136 is an abundant number, since it is smaller than the sum of its proper divisors (290905664).

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

225867136 is a wasteful number, since it uses less digits than its factorization.

225867136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487 (or 8475 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 225867136 is about 15028.8767378005. The cubic root of 225867136 is about 609.0005455474. Note that the first 3 decimals are identical.

The spelling of 225867136 in words is "two hundred twenty-five million, eight hundred sixty-seven thousand, one hundred thirty-six".