256260277 has 32 divisors (see below), whose sum is σ = 334342400. Its totient is φ = 191865024.

The previous prime is 256260241. The next prime is 256260283. The reversal of 256260277 is 772062652.

It is not a de Polignac number, because 256260277 - 2¹¹ = 256258229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256260217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291763 + ... + 292639.

It is an arithmetic number, because the mean of its divisors is an integer number (10448200).

Almost surely, 2^256260277 is an apocalyptic number.

It is an amenable number.

256260277 is a deficient number, since it is larger than the sum of its proper divisors (78082123).

256260277 is an equidigital number, since it uses as much as digits as its factorization.

256260277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 256260277 is about 16008.1315899139. The cubic root of 256260277 is about 635.1755374750.

The spelling of 256260277 in words is "two hundred fifty-six million, two hundred sixty thousand, two hundred seventy-seven".