1283725 has 6 divisors (see below), whose sum is σ = 1591850. Its totient is φ = 1026960.

The previous prime is 1283719. The next prime is 1283731. The reversal of 1283725 is 5273821.

It is an interprime number because it is at equal distance from previous prime (1283719) and next prime (1283731).

It can be written as a sum of positive squares in 3 ways, for example, as 36 + 1283689 = 6^2 + 1133^2 .

It is not a de Polignac number, because 1283725 - 2³ = 1283717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1283693 and 1283702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25650 + ... + 25699.

2^1283725 is an apocalyptic number.

It is an amenable number.

1283725 is a deficient number, since it is larger than the sum of its proper divisors (308125).

1283725 is an equidigital number, since it uses as much as digits as its factorization.

1283725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51359 (or 51354 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 1283725 is about 1133.0158869142. The cubic root of 1283725 is about 108.6819277164.

The spelling of 1283725 in words is "one million, two hundred eighty-three thousand, seven hundred twenty-five".