1256225 has 12 divisors (see below), whose sum is σ = 1575420. Its totient is φ = 993600.

The previous prime is 1256209. The next prime is 1256231. The reversal of 1256225 is 5226521.

It can be written as a sum of positive squares in 6 ways, for example, as 21904 + 1234321 = 148^2 + 1111^2 .

It is not a de Polignac number, because 1256225 - 2⁴ = 1256209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1256225.

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, 2495 + ... + 2955.

It is an arithmetic number, because the mean of its divisors is an integer number (131285).

2^1256225 is an apocalyptic number.

It is an amenable number.

1256225 is a deficient number, since it is larger than the sum of its proper divisors (319195).

1256225 is a wasteful number, since it uses less digits than its factorization.

1256225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 575 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 1256225 is about 1120.8144360241. The cubic root of 1256225 is about 107.9002565614.

The spelling of 1256225 in words is "one million, two hundred fifty-six thousand, two hundred twenty-five".