225891544 has 16 divisors (see below), whose sum is σ = 437209920. Its totient is φ = 109302240.

The previous prime is 225891539. The next prime is 225891569. The reversal of 225891544 is 445198522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 225891497 and 225891506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455179 + ... + 455674.

It is an arithmetic number, because the mean of its divisors is an integer number (27325620).

Almost surely, 2^225891544 is an apocalyptic number.

It is an amenable number.

225891544 is a deficient number, since it is larger than the sum of its proper divisors (211318376).

225891544 is a wasteful number, since it uses less digits than its factorization.

225891544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910890 (or 910886 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 225891544 is about 15029.6887525990. The cubic root of 225891544 is about 609.0224816734.

The spelling of 225891544 in words is "two hundred twenty-five million, eight hundred ninety-one thousand, five hundred forty-four".