256088645 has 8 divisors (see below), whose sum is σ = 307392504. Its totient is φ = 204813504.

The previous prime is 256088621. The next prime is 256088653. The reversal of 256088645 is 546880652.

256088645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 56644 + 256032001 = 238^2 + 16001^2 .

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 256088645 - 2⁸ = 256088389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 256088596 and 256088605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29327 + ... + 37043.

It is an arithmetic number, because the mean of its divisors is an integer number (38424063).

Almost surely, 2^256088645 is an apocalyptic number.

It is an amenable number.

256088645 is a deficient number, since it is larger than the sum of its proper divisors (51303859).

256088645 is an equidigital number, since it uses as much as digits as its factorization.

256088645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14359.

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 256088645 is about 16002.7699164863. The cubic root of 256088645 is about 635.0337014787.

The spelling of 256088645 in words is "two hundred fifty-six million, eighty-eight thousand, six hundred forty-five".