1225255 has 12 divisors (see below), whose sum is σ = 1519560. Its totient is φ = 948384.

The previous prime is 1225223. The next prime is 1225261. The reversal of 1225255 is 5525221.

It is not a de Polignac number, because 1225255 - 2⁵ = 1225223 is a prime.

1225255 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6756 + ... + 6934.

It is an arithmetic number, because the mean of its divisors is an integer number (126630).

2^1225255 is an apocalyptic number.

1225255 is a deficient number, since it is larger than the sum of its proper divisors (294305).

1225255 is an equidigital number, since it uses as much as digits as its factorization.

1225255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 221 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 1225255 is about 1106.9123723222. The cubic root of 1225255 is about 107.0061719443.

The spelling of 1225255 in words is "one million, two hundred twenty-five thousand, two hundred fifty-five".