256526267 has 4 divisors (see below), whose sum is σ = 257548536. Its totient is φ = 255504000.

The previous prime is 256526119. The next prime is 256526327. The reversal of 256526267 is 762625652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256526267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256520267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510758 + ... + 511259.

It is an arithmetic number, because the mean of its divisors is an integer number (64387134).

Almost surely, 2^256526267 is an apocalyptic number.

256526267 is a deficient number, since it is larger than the sum of its proper divisors (1022269).

256526267 is a wasteful number, since it uses less digits than its factorization.

256526267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022268.

The product of its digits is 302400, while the sum is 41.

The square root of 256526267 is about 16016.4374003709. The cubic root of 256526267 is about 635.3952254707.

The spelling of 256526267 in words is "two hundred fifty-six million, five hundred twenty-six thousand, two hundred sixty-seven".