1283563860525 has 18 divisors (see below), whose sum is σ = 2299005492810. Its totient is φ = 684567392160.

The previous prime is 1283563860499. The next prime is 1283563860529. The reversal of 1283563860525 is 5250683653821.

It is a happy number.

1283563860525 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 5 + 6 + 3 + 8 + 605 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 23488014564 + 1260075845961 = 153258^2 + 1122531^2 .

It is not a de Polignac number, because 1283563860525 - 2⁸ = 1283563860269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283563860529) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2852363910 + ... + 2852364359.

Almost surely, 2^{1283563860525} is an apocalyptic number.

1283563860525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1283563860525 is a deficient number, since it is larger than the sum of its proper divisors (1015441632285).

1283563860525 is a wasteful number, since it uses less digits than its factorization.

1283563860525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704728285 (or 5704728277 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 1283563860525 in words is "one trillion, two hundred eighty-three billion, five hundred sixty-three million, eight hundred sixty thousand, five hundred twenty-five".