256026545 has 24 divisors (see below), whose sum is σ = 328671744. Its totient is φ = 191414016.

The previous prime is 256026527. The next prime is 256026557. The reversal of 256026545 is 545620652.

It is not a de Polignac number, because 256026545 - 2⁸ = 256026289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234992 + ... + 236078.

It is an arithmetic number, because the mean of its divisors is an integer number (13694656).

Almost surely, 2^256026545 is an apocalyptic number.

It is an amenable number.

256026545 is a deficient number, since it is larger than the sum of its proper divisors (72645199).

256026545 is a wasteful number, since it uses less digits than its factorization.

256026545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 256026545 is about 16000.8295097473. The cubic root of 256026545 is about 634.9823666751.

The spelling of 256026545 in words is "two hundred fifty-six million, twenty-six thousand, five hundred forty-five".