225002644 has 12 divisors (see below), whose sum is σ = 399149044. Its totient is φ = 110960064.

The previous prime is 225002639. The next prime is 225002647. The reversal of 225002644 is 446200522.

225002644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 77088400 + 147914244 = 8780^2 + 12162^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225002647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384987 + ... + 385570.

Almost surely, 2^225002644 is an apocalyptic number.

It is an amenable number.

225002644 is a deficient number, since it is larger than the sum of its proper divisors (174146400).

225002644 is a wasteful number, since it uses less digits than its factorization.

225002644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770634 (or 770632 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 225002644 is about 15000.0881330744. The cubic root of 225002644 is about 608.2225819691. Note that the first 3 decimals are identical.

The spelling of 225002644 in words is "two hundred twenty-five million, two thousand, six hundred forty-four".