256034405 has 32 divisors (see below), whose sum is σ = 354240000. Its totient is φ = 175694400.

The previous prime is 256034393. The next prime is 256034411. The reversal of 256034405 is 504430652.

256034405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256034405 - 2¹⁰ = 256033381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 512846 + ... + 513344.

It is an arithmetic number, because the mean of its divisors is an integer number (11070000).

Almost surely, 2^256034405 is an apocalyptic number.

It is an amenable number.

256034405 is a deficient number, since it is larger than the sum of its proper divisors (98205595).

256034405 is a wasteful number, since it uses less digits than its factorization.

256034405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 256034405 is about 16001.0751201286. The cubic root of 256034405 is about 634.9888645825.

The spelling of 256034405 in words is "two hundred fifty-six million, thirty-four thousand, four hundred five".