256925489279 has 16 divisors (see below), whose sum is σ = 268606679040. Its totient is φ = 245472264480.

The previous prime is 256925489269. The next prime is 256925489321. The reversal of 256925489279 is 972984529652.

It is a cyclic number.

It is not a de Polignac number, because 256925489279 - 2¹⁶ = 256925423743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256925489239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839702 + ... + 1104060.

It is an arithmetic number, because the mean of its divisors is an integer number (16787917440).

Almost surely, 2^256925489279 is an apocalyptic number.

256925489279 is a deficient number, since it is larger than the sum of its proper divisors (11681189761).

256925489279 is a wasteful number, since it uses less digits than its factorization.

256925489279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264790.

The product of its digits is 195955200, while the sum is 68.

The spelling of 256925489279 in words is "two hundred fifty-six billion, nine hundred twenty-five million, four hundred eighty-nine thousand, two hundred seventy-nine".