1256115932 has 12 divisors (see below), whose sum is σ = 2201626056. Its totient is φ = 627079920.

The previous prime is 1256115929. The next prime is 1256115977. The reversal of 1256115932 is 2395116521.

It is a junction number, because it is equal to n+sod(n) for n = 1256115892 and 1256115901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241619 + ... + 246762.

It is an arithmetic number, because the mean of its divisors is an integer number (183468838).

Almost surely, 2^1256115932 is an apocalyptic number.

It is an amenable number.

1256115932 is a deficient number, since it is larger than the sum of its proper divisors (945510124).

1256115932 is a wasteful number, since it uses less digits than its factorization.

1256115932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489028 (or 489026 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 1256115932 is about 35441.7258609115. The cubic root of 1256115932 is about 1078.9713376471.

The spelling of 1256115932 in words is "one billion, two hundred fifty-six million, one hundred fifteen thousand, nine hundred thirty-two".