227221225 has 24 divisors (see below), whose sum is σ = 351281088. Its totient is φ = 141643200.

The previous prime is 227221219. The next prime is 227221231. The reversal of 227221225 is 522122722.

It is an interprime number because it is at equal distance from previous prime (227221219) and next prime (227221231).

It is not a de Polignac number, because 227221225 - 2⁷ = 227221097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 227221225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57094 + ... + 60943.

It is an arithmetic number, because the mean of its divisors is an integer number (14636712).

Almost surely, 2^227221225 is an apocalyptic number.

227221225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

227221225 is a deficient number, since it is larger than the sum of its proper divisors (124059863).

227221225 is a wasteful number, since it uses less digits than its factorization.

227221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118065 (or 118060 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 227221225 is about 15073.8589949621. The cubic root of 227221225 is about 610.2151216542.

Adding to 227221225 its reverse (522122722), we get a palindrome (749343947).

The spelling of 227221225 in words is "two hundred twenty-seven million, two hundred twenty-one thousand, two hundred twenty-five".