1225853 has 4 divisors (see below), whose sum is σ = 1297980. Its totient is φ = 1153728.

The previous prime is 1225849. The next prime is 1225871. The reversal of 1225853 is 3585221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 850084 + 375769 = 922^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225853 - 2² = 1225849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36038 + ... + 36071.

It is an arithmetic number, because the mean of its divisors is an integer number (324495).

2^1225853 is an apocalyptic number.

It is an amenable number.

1225853 is a deficient number, since it is larger than the sum of its proper divisors (72127).

1225853 is an equidigital number, since it uses as much as digits as its factorization.

1225853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72126.

The product of its digits is 2400, while the sum is 26.

The square root of 1225853 is about 1107.1824601212. The cubic root of 1225853 is about 107.0235776499.

The spelling of 1225853 in words is "one million, two hundred twenty-five thousand, eight hundred fifty-three".