256225455443 has 8 divisors (see below), whose sum is σ = 262574477568. Its totient is φ = 249950691144.

The previous prime is 256225455427. The next prime is 256225455461. The reversal of 256225455443 is 344554522652.

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 256225455443 - 2⁴ = 256225455427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256225455413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18557471 + ... + 18571272.

It is an arithmetic number, because the mean of its divisors is an integer number (32821809696).

Almost surely, 2^256225455443 is an apocalyptic number.

256225455443 is a deficient number, since it is larger than the sum of its proper divisors (6349022125).

256225455443 is a wasteful number, since it uses less digits than its factorization.

256225455443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37128913.

The product of its digits is 5760000, while the sum is 47.

The spelling of 256225455443 in words is "two hundred fifty-six billion, two hundred twenty-five million, four hundred fifty-five thousand, four hundred forty-three".