225851572 has 6 divisors (see below), whose sum is σ = 395240258. Its totient is φ = 112925784.

The previous prime is 225851569. The next prime is 225851581. The reversal of 225851572 is 275158522.

It can be written as a sum of positive squares in only one way, i.e., 175668516 + 50183056 = 13254^2 + 7084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28231443 + ... + 28231450.

Almost surely, 2^225851572 is an apocalyptic number.

It is an amenable number.

225851572 is a deficient number, since it is larger than the sum of its proper divisors (169388686).

225851572 is a wasteful number, since it uses less digits than its factorization.

225851572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56462897 (or 56462895 counting only the distinct ones).

The product of its digits is 56000, while the sum is 37.

The square root of 225851572 is about 15028.3589257111. The cubic root of 225851572 is about 608.9865569368.

The spelling of 225851572 in words is "two hundred twenty-five million, eight hundred fifty-one thousand, five hundred seventy-two".