226143225 has 192 divisors, whose sum is σ = 547584000. Its totient is φ = 88646400.

The previous prime is 226143191. The next prime is 226143241. The reversal of 226143225 is 522341622.

It is a happy number.

226143225 is a `hidden beast` number, since 22 + 614 + 3 + 2 + 25 = 666.

It is not a de Polignac number, because 226143225 - 2⁶ = 226143161 is a prime.

It is a super-2 number, since 2×226143225² = 102281516426801250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 987411 + ... + 987639.

It is an arithmetic number, because the mean of its divisors is an integer number (2852000).

Almost surely, 2^226143225 is an apocalyptic number.

226143225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

226143225 is an abundant number, since it is smaller than the sum of its proper divisors (321440775).

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

226143225 is a wasteful number, since it uses less digits than its factorization.

226143225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 274 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 226143225 is about 15038.0592165346. The cubic root of 226143225 is about 609.2485820598.

Adding to 226143225 its reverse (522341622), we get a palindrome (748484847).

The spelling of 226143225 in words is "two hundred twenty-six million, one hundred forty-three thousand, two hundred twenty-five".