1283825 has 12 divisors (see below), whose sum is σ = 1612620. Its totient is φ = 1013760.

The previous prime is 1283797. The next prime is 1283831. The reversal of 1283825 is 5283821.

It can be written as a sum of positive squares in 6 ways, for example, as 2401 + 1281424 = 49^2 + 1132^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1283825 is a prime.

It is an Ulam 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, 1937 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (134385).

2^1283825 is an apocalyptic number.

It is an amenable number.

1283825 is a deficient number, since it is larger than the sum of its proper divisors (328795).

1283825 is an equidigital number, since it uses as much as digits as its factorization.

1283825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 671 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1283825 is about 1133.0600160627. The cubic root of 1283825 is about 108.6847496891.

The spelling of 1283825 in words is "one million, two hundred eighty-three thousand, eight hundred twenty-five".