256011149 has 8 divisors (see below), whose sum is σ = 270291840. Its totient is φ = 241811136.

The previous prime is 256011131. The next prime is 256011163. The reversal of 256011149 is 941110652.

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

It is a cyclic number.

It is not a de Polignac number, because 256011149 - 2⁸ = 256010893 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 (256011169) 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, 13589 + ... + 26394.

It is an arithmetic number, because the mean of its divisors is an integer number (33786480).

Almost surely, 2^256011149 is an apocalyptic number.

It is an amenable number.

256011149 is a deficient number, since it is larger than the sum of its proper divisors (14280691).

256011149 is a wasteful number, since it uses less digits than its factorization.

256011149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40339.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 256011149 is about 16000.3484024567. The cubic root of 256011149 is about 634.9696383276.

The spelling of 256011149 in words is "two hundred fifty-six million, eleven thousand, one hundred forty-nine".