1255944940426 has 16 divisors (see below), whose sum is σ = 2068975807200. Its totient is φ = 567052625680.

The previous prime is 1255944940421. The next prime is 1255944940441. The reversal of 1255944940426 is 6240494495521.

It is a super-2 number, since 2×1255944940426² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255944940421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 191568556 + ... + 191575111.

It is an arithmetic number, because the mean of its divisors is an integer number (129310987950).

Almost surely, 2^{1255944940426} is an apocalyptic number.

1255944940426 is a deficient number, since it is larger than the sum of its proper divisors (813030866774).

1255944940426 is a wasteful number, since it uses less digits than its factorization.

1255944940426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383143829.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 1255944940426 in words is "one trillion, two hundred fifty-five billion, nine hundred forty-four million, nine hundred forty thousand, four hundred twenty-six".