256098775 has 24 divisors (see below), whose sum is σ = 323979264. Its totient is φ = 200776800.

The previous prime is 256098691. The next prime is 256098779. The reversal of 256098775 is 577890652.

It is not a de Polignac number, because 256098775 - 2⁹ = 256098263 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 (256098779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395502 + ... + 396148.

It is an arithmetic number, because the mean of its divisors is an integer number (13499136).

Almost surely, 2^256098775 is an apocalyptic number.

256098775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256098775 is a deficient number, since it is larger than the sum of its proper divisors (67880489).

256098775 is a wasteful number, since it uses less digits than its factorization.

256098775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 256098775 is about 16003.0864210627. The cubic root of 256098775 is about 635.0420746296.

The spelling of 256098775 in words is "two hundred fifty-six million, ninety-eight thousand, seven hundred seventy-five".