255720752745 has 16 divisors (see below), whose sum is σ = 409182078912. Its totient is φ = 136374776640.

The previous prime is 255720752711. The next prime is 255720752767. The reversal of 255720752745 is 547257027552.

It is not a de Polignac number, because 255720752745 - 2¹⁰ = 255720751721 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379267 + ... + 809496.

It is an arithmetic number, because the mean of its divisors is an integer number (25573879932).

Almost surely, 2^255720752745 is an apocalyptic number.

It is an amenable number.

255720752745 is a deficient number, since it is larger than the sum of its proper divisors (153461326167).

255720752745 is a wasteful number, since it uses less digits than its factorization.

255720752745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203112.

The product of its (nonzero) digits is 6860000, while the sum is 51.

The spelling of 255720752745 in words is "two hundred fifty-five billion, seven hundred twenty million, seven hundred fifty-two thousand, seven hundred forty-five".