1256945084 has 6 divisors (see below), whose sum is σ = 2199653904. Its totient is φ = 628472540.

The previous prime is 1256945071. The next prime is 1256945113. The reversal of 1256945084 is 4805496521.

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 as a sum of consecutive naturals, namely, 157118132 + ... + 157118139.

It is an arithmetic number, because the mean of its divisors is an integer number (366608984).

Almost surely, 2^1256945084 is an apocalyptic number.

It is an amenable number.

1256945084 is a deficient number, since it is larger than the sum of its proper divisors (942708820).

1256945084 is a wasteful number, since it uses less digits than its factorization.

1256945084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314236275 (or 314236273 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 1256945084 is about 35453.4213299648. The cubic root of 1256945084 is about 1079.2086921899.

The spelling of 1256945084 in words is "one billion, two hundred fifty-six million, nine hundred forty-five thousand, eighty-four".