225130644 has 96 divisors (see below), whose sum is σ = 611331840. Its totient is φ = 71570304.

The previous prime is 225130637. The next prime is 225130657. The reversal of 225130644 is 446031522.

225130644 is a `hidden beast` number, since 2 + 2 + 5 + 13 + 0 + 644 = 666.

225130644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211257 + ... + 212319.

It is an arithmetic number, because the mean of its divisors is an integer number (6368040).

Almost surely, 2^225130644 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 225130644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305665920).

225130644 is an abundant number, since it is smaller than the sum of its proper divisors (386201196).

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

225130644 is a wasteful number, since it uses less digits than its factorization.

225130644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 225130644 is about 15004.3541680407. The cubic root of 225130644 is about 608.3378957728.

The spelling of 225130644 in words is "two hundred twenty-five million, one hundred thirty thousand, six hundred forty-four".