283981825 has 6 divisors (see below), whose sum is σ = 352137494. Its totient is φ = 227185440.

The previous prime is 283981813. The next prime is 283981837. The reversal of 283981825 is 528189382.

It is an interprime number because it is at equal distance from previous prime (283981813) and next prime (283981837).

It can be written as a sum of positive squares in 3 ways, for example, as 63489024 + 220492801 = 7968^2 + 14849^2 .

It is a de Polignac number, because none of the positive numbers 2^k-283981825 is a prime.

It is a Duffinian 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, 5679612 + ... + 5679661.

Almost surely, 2^283981825 is an apocalyptic number.

283981825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

283981825 is a deficient number, since it is larger than the sum of its proper divisors (68155669).

283981825 is a wasteful number, since it uses less digits than its factorization.

283981825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11359283 (or 11359278 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The square root of 283981825 is about 16851.7602938091. The cubic root of 283981825 is about 657.2998229212.

The spelling of 283981825 in words is "two hundred eighty-three million, nine hundred eighty-one thousand, eight hundred twenty-five".