1256263881325 has 12 divisors (see below), whose sum is σ = 1558171842048. Its totient is φ = 1004750054000.

The previous prime is 1256263881163. The next prime is 1256263881359. The reversal of 1256263881325 is 5231883626521.

It is not a de Polignac number, because 1256263881325 - 2¹³ = 1256263873133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6428077 + ... + 6620626.

It is an arithmetic number, because the mean of its divisors is an integer number (129847653504).

Almost surely, 2^{1256263881325} is an apocalyptic number.

It is an amenable number.

1256263881325 is a deficient number, since it is larger than the sum of its proper divisors (301907960723).

1256263881325 is a wasteful number, since it uses less digits than its factorization.

1256263881325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13052564 (or 13052559 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 52.

The spelling of 1256263881325 in words is "one trillion, two hundred fifty-six billion, two hundred sixty-three million, eight hundred eighty-one thousand, three hundred twenty-five".