256512423 has 8 divisors (see below), whose sum is σ = 342127600. Its totient is φ = 170952768.

The previous prime is 256512401. The next prime is 256512433. The reversal of 256512423 is 324215652.

256512423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 256512423 - 2⁵ = 256512391 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 (256512433) 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, 1528 + ... + 22701.

It is an arithmetic number, because the mean of its divisors is an integer number (42765950).

Almost surely, 2^256512423 is an apocalyptic number.

256512423 is a deficient number, since it is larger than the sum of its proper divisors (85615177).

256512423 is a wasteful number, since it uses less digits than its factorization.

256512423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27761.

The product of its digits is 14400, while the sum is 30.

The square root of 256512423 is about 16016.0052135356. The cubic root of 256512423 is about 635.3837951016.

The spelling of 256512423 in words is "two hundred fifty-six million, five hundred twelve thousand, four hundred twenty-three".