225025644 has 36 divisors (see below), whose sum is σ = 530794824. Its totient is φ = 74198016.

The previous prime is 225025637. The next prime is 225025649. The reversal of 225025644 is 446520522.

It is a happy number.

It is a super-2 number, since 2×225025644² = 101273080915229472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225025649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111912 + ... + 113904.

Almost surely, 2^225025644 is an apocalyptic number.

It is an amenable number.

225025644 is an abundant number, since it is smaller than the sum of its proper divisors (305769180).

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

225025644 is a wasteful number, since it uses less digits than its factorization.

225025644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 225025644 is about 15000.8547756453. The cubic root of 225025644 is about 608.2433056407.

The spelling of 225025644 in words is "two hundred twenty-five million, twenty-five thousand, six hundred forty-four".