256088169 has 8 divisors (see below), whose sum is σ = 379389920. Its totient is φ = 170725428.

The previous prime is 256088167. The next prime is 256088207. The reversal of 256088169 is 961880652.

256088169 is a `hidden beast` number, since 2 + 560 + 8 + 81 + 6 + 9 = 666.

256088169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256088169 - 2¹ = 256088167 is a prime.

It is a super-2 number, since 2×256088169² = 131162300603545122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256088167) 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, 4742347 + ... + 4742400.

It is an arithmetic number, because the mean of its divisors is an integer number (47423740).

Almost surely, 2^256088169 is an apocalyptic number.

It is an amenable number.

256088169 is a deficient number, since it is larger than the sum of its proper divisors (123301751).

256088169 is an equidigital number, since it uses as much as digits as its factorization.

256088169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484756 (or 9484750 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 256088169 is about 16002.7550440541. The cubic root of 256088169 is about 635.0333080261.

The spelling of 256088169 in words is "two hundred fifty-six million, eighty-eight thousand, one hundred sixty-nine".