1285286952492 has 72 divisors (see below), whose sum is σ = 3325173755904. Its totient is φ = 418377699936.

The previous prime is 1285286952487. The next prime is 1285286952539. The reversal of 1285286952492 is 2942596825821.

It is a happy number.

1285286952492 is a `hidden beast` number, since 1 + 2 + 8 + 52 + 8 + 6 + 95 + 2 + 492 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7505173 + ... + 7674515.

It is an arithmetic number, because the mean of its divisors is an integer number (46182968832).

Almost surely, 2^{1285286952492} is an apocalyptic number.

1285286952492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1285286952492 is an abundant number, since it is smaller than the sum of its proper divisors (2039886803412).

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

1285286952492 is a wasteful number, since it uses less digits than its factorization.

1285286952492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174299 (or 174294 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The spelling of 1285286952492 in words is "one trillion, two hundred eighty-five billion, two hundred eighty-six million, nine hundred fifty-two thousand, four hundred ninety-two".