256152135 has 8 divisors (see below), whose sum is σ = 409843440. Its totient is φ = 136614464.

The previous prime is 256152121. The next prime is 256152187. The reversal of 256152135 is 531251652.

It is a happy number.

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 256152135 - 2⁵ = 256152103 is a prime.

It is a super-2 number, since 2×256152135² = 131227832530116450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 8538390 + ... + 8538419.

It is an arithmetic number, because the mean of its divisors is an integer number (51230430).

Almost surely, 2^256152135 is an apocalyptic number.

256152135 is a deficient number, since it is larger than the sum of its proper divisors (153691305).

256152135 is a wasteful number, since it uses less digits than its factorization.

256152135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17076817.

The product of its digits is 9000, while the sum is 30.

The square root of 256152135 is about 16004.7535126287. The cubic root of 256152135 is about 635.0861767433.

The spelling of 256152135 in words is "two hundred fifty-six million, one hundred fifty-two thousand, one hundred thirty-five".