1225285 has 16 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 927360.

The previous prime is 1225283. The next prime is 1225297. The reversal of 1225285 is 5825221.

It is not a de Polignac number, because 1225285 - 2¹ = 1225283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8746 + ... + 8884.

It is an arithmetic number, because the mean of its divisors is an integer number (97020).

2^1225285 is an apocalyptic number.

It is an amenable number.

1225285 is a deficient number, since it is larger than the sum of its proper divisors (327035).

1225285 is a wasteful number, since it uses less digits than its factorization.

1225285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its digits is 1600, while the sum is 25.

The square root of 1225285 is about 1106.9259234475. The cubic root of 1225285 is about 107.0070452752.

The spelling of 1225285 in words is "one million, two hundred twenty-five thousand, two hundred eighty-five".