1285300863252 has 144 divisors (see below), whose sum is σ = 3923267467392. Its totient is φ = 360299871360.

The previous prime is 1285300863167. The next prime is 1285300863281. The reversal of 1285300863252 is 2523680035821.

1285300863252 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 3 + 0 + 0 + 8 + 632 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1285300863198 and 1285300863207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1421499 + ... + 2142722.

It is an arithmetic number, because the mean of its divisors is an integer number (27244912968).

Almost surely, 2^{1285300863252} is an apocalyptic number.

1285300863252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1285300863252 is an abundant number, since it is smaller than the sum of its proper divisors (2637966604140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285300863252 is a wasteful number, since it uses less digits than its factorization.

1285300863252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564300 (or 3564286 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 1285300863252 in words is "one trillion, two hundred eighty-five billion, three hundred million, eight hundred sixty-three thousand, two hundred fifty-two".