1225505 has 8 divisors (see below), whose sum is σ = 1482624. Its totient is φ = 972400.

The previous prime is 1225501. The next prime is 1225507. The reversal of 1225505 is 5055221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225505 - 2² = 1225501 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1225501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (185328).

2^1225505 is an apocalyptic number.

It is an amenable number.

1225505 is a deficient number, since it is larger than the sum of its proper divisors (257119).

1225505 is a wasteful number, since it uses less digits than its factorization.

1225505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1225505 is about 1107.0252932973. The cubic root of 1225505 is about 107.0134492659.

The spelling of 1225505 in words is "one million, two hundred twenty-five thousand, five hundred five".