256925678 has 8 divisors (see below), whose sum is σ = 385530672. Its totient is φ = 128415456.

The previous prime is 256925671. The next prime is 256925687. The reversal of 256925678 is 876529652.

256925678 is nontrivially palindromic in base 9.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256925671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16475 + ... + 28022.

It is an arithmetic number, because the mean of its divisors is an integer number (48191334).

Almost surely, 2^256925678 is an apocalyptic number.

256925678 is a deficient number, since it is larger than the sum of its proper divisors (128604994).

256925678 is a wasteful number, since it uses less digits than its factorization.

256925678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47386.

The product of its digits is 1814400, while the sum is 50.

The square root of 256925678 is about 16028.9013347765. The cubic root of 256925678 is about 635.7248242618.

The spelling of 256925678 in words is "two hundred fifty-six million, nine hundred twenty-five thousand, six hundred seventy-eight".