1255986012 has 12 divisors (see below), whose sum is σ = 2930634056. Its totient is φ = 418662000.

The previous prime is 1255985999. The next prime is 1255986037. The reversal of 1255986012 is 2106895521.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 52332739 + ... + 52332762.

Almost surely, 2^1255986012 is an apocalyptic number.

1255986012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1255986012 is an abundant number, since it is smaller than the sum of its proper divisors (1674648044).

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

1255986012 is a wasteful number, since it uses less digits than its factorization.

1255986012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104665508 (or 104665506 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 1255986012 is about 35439.8929456622. The cubic root of 1255986012 is about 1078.9341370496.

The spelling of 1255986012 in words is "one billion, two hundred fifty-five million, nine hundred eighty-six thousand, twelve".