225725556 has 96 divisors (see below), whose sum is σ = 619718400. Its totient is φ = 63917952.

The previous prime is 225725483. The next prime is 225725557. The reversal of 225725556 is 655527522.

225725556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225725557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 711910 + ... + 712226.

It is an arithmetic number, because the mean of its divisors is an integer number (6455400).

Almost surely, 2^225725556 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 225725556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309859200).

225725556 is an abundant number, since it is smaller than the sum of its proper divisors (393992844).

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

225725556 is a wasteful number, since it uses less digits than its factorization.

225725556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 502 counting only the distinct ones).

The product of its digits is 210000, while the sum is 39.

The square root of 225725556 is about 15024.1657339102. The cubic root of 225725556 is about 608.8732726137.

The spelling of 225725556 in words is "two hundred twenty-five million, seven hundred twenty-five thousand, five hundred fifty-six".