256223432055 has 8 divisors (see below), whose sum is σ = 409957491312. Its totient is φ = 136652497088.

The previous prime is 256223432033. The next prime is 256223432077. The reversal of 256223432055 is 550234322652.

It is an interprime number because it is at equal distance from previous prime (256223432033) and next prime (256223432077).

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 256223432055 - 2⁷ = 256223431927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8540781054 + ... + 8540781083.

It is an arithmetic number, because the mean of its divisors is an integer number (51244686414).

Almost surely, 2^256223432055 is an apocalyptic number.

256223432055 is a deficient number, since it is larger than the sum of its proper divisors (153734059257).

256223432055 is a wasteful number, since it uses less digits than its factorization.

256223432055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17081562145.

The product of its (nonzero) digits is 432000, while the sum is 39.

The spelling of 256223432055 in words is "two hundred fifty-six billion, two hundred twenty-three million, four hundred thirty-two thousand, fifty-five".