256532523 has 8 divisors (see below), whose sum is σ = 368354448. Its totient is φ = 157866144.

The previous prime is 256532519. The next prime is 256532537. The reversal of 256532523 is 325235652.

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

It is not a de Polignac number, because 256532523 - 2² = 256532519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256532503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3288840 + ... + 3288917.

It is an arithmetic number, because the mean of its divisors is an integer number (46044306).

Almost surely, 2^256532523 is an apocalyptic number.

256532523 is a deficient number, since it is larger than the sum of its proper divisors (111821925).

256532523 is a wasteful number, since it uses less digits than its factorization.

256532523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577773.

The product of its digits is 54000, while the sum is 33.

The square root of 256532523 is about 16016.6326985419. The cubic root of 256532523 is about 635.4003906340.

The spelling of 256532523 in words is "two hundred fifty-six million, five hundred thirty-two thousand, five hundred twenty-three".