225122556 has 24 divisors (see below), whose sum is σ = 526332240. Its totient is φ = 74891392.

The previous prime is 225122549. The next prime is 225122581. The reversal of 225122556 is 655221522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12321 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (21930510).

Almost surely, 2^225122556 is an apocalyptic number.

It is an amenable number.

225122556 is an abundant number, since it is smaller than the sum of its proper divisors (301209684).

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

225122556 is a wasteful number, since it uses less digits than its factorization.

225122556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37373 (or 37371 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 225122556 is about 15004.0846438562. The cubic root of 225122556 is about 608.3306106757.

The spelling of 225122556 in words is "two hundred twenty-five million, one hundred twenty-two thousand, five hundred fifty-six".