1285563548 has 12 divisors (see below), whose sum is σ = 2292184440. Its totient is φ = 630653712.

The previous prime is 1285563529. The next prime is 1285563667. The reversal of 1285563548 is 8453655821.

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 3 ways as a sum of consecutive naturals, for example, 3031778 + ... + 3032201.

It is an arithmetic number, because the mean of its divisors is an integer number (191015370).

Almost surely, 2^1285563548 is an apocalyptic number.

It is an amenable number.

1285563548 is a deficient number, since it is larger than the sum of its proper divisors (1006620892).

1285563548 is a wasteful number, since it uses less digits than its factorization.

1285563548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064036 (or 6064034 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 47.

The square root of 1285563548 is about 35854.7562814196. The cubic root of 1285563548 is about 1087.3378763560.

The spelling of 1285563548 in words is "one billion, two hundred eighty-five million, five hundred sixty-three thousand, five hundred forty-eight".