256156255 has 16 divisors (see below), whose sum is σ = 335971584. Its totient is φ = 186647040.

The previous prime is 256156253. The next prime is 256156259. The reversal of 256156255 is 552651652.

It is not a de Polignac number, because 256156255 - 2¹ = 256156253 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 (256156253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45972 + ... + 51241.

It is an arithmetic number, because the mean of its divisors is an integer number (20998224).

Almost surely, 2^256156255 is an apocalyptic number.

256156255 is a deficient number, since it is larger than the sum of its proper divisors (79815329).

256156255 is a wasteful number, since it uses less digits than its factorization.

256156255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97266.

The product of its digits is 90000, while the sum is 37.

The square root of 256156255 is about 16004.8822238716. The cubic root of 256156255 is about 635.0895816743.

The spelling of 256156255 in words is "two hundred fifty-six million, one hundred fifty-six thousand, two hundred fifty-five".