1256876251375 has 8 divisors (see below), whose sum is σ = 1568581561872. Its totient is φ = 1005501001000.

The previous prime is 1256876251373. The next prime is 1256876251387. The reversal of 1256876251375 is 5731526786521.

It is not a de Polignac number, because 1256876251375 - 2¹ = 1256876251373 is a prime.

It is a super-3 number, since 3×1256876251375³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256876251373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5027504881 + ... + 5027505130.

It is an arithmetic number, because the mean of its divisors is an integer number (196072695234).

Almost surely, 2^{1256876251375} is an apocalyptic number.

1256876251375 is a deficient number, since it is larger than the sum of its proper divisors (311705310497).

1256876251375 is an equidigital number, since it uses as much as digits as its factorization.

1256876251375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055010026 (or 10055010016 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 58.

The spelling of 1256876251375 in words is "one trillion, two hundred fifty-six billion, eight hundred seventy-six million, two hundred fifty-one thousand, three hundred seventy-five".