225020256 has 36 divisors (see below), whose sum is σ = 591064236. Its totient is φ = 74957760.

The previous prime is 225020219. The next prime is 225020261. The reversal of 225020256 is 652020522.

It is a super-2 number, since 2×225020256² = 101268231220611072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146211 + ... + 147741.

It is an arithmetic number, because the mean of its divisors is an integer number (16418451).

Almost surely, 2^225020256 is an apocalyptic number.

It is an amenable number.

225020256 is an abundant number, since it is smaller than the sum of its proper divisors (366043980).

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

225020256 is an frugal number, since it uses more digits than its factorization.

225020256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 225020256 is about 15000.6751848042. The cubic root of 225020256 is about 608.2384510220.

Multiplying 225020256 by its sum of digits (24), we get a square (5400486144 = 73488²).

225020256 divided by its sum of digits (24) gives a square (9375844 = 3062²).

Multiplying 225020256 by its product of nonzero digits (2400), we get a square (540048614400 = 734880²).

Adding to 225020256 its reverse (652020522), we get a palindrome (877040778).

The spelling of 225020256 in words is "two hundred twenty-five million, twenty thousand, two hundred fifty-six".