256605234532 has 6 divisors (see below), whose sum is σ = 449059160438. Its totient is φ = 128302617264.

The previous prime is 256605234493. The next prime is 256605234563. The reversal of 256605234532 is 235432506652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 255706194276 + 899040256 = 505674^2 + 29984^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32075654313 + ... + 32075654320.

Almost surely, 2^256605234532 is an apocalyptic number.

It is an amenable number.

256605234532 is a deficient number, since it is larger than the sum of its proper divisors (192453925906).

256605234532 is a wasteful number, since it uses less digits than its factorization.

256605234532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64151308637 (or 64151308635 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 256605234532 in words is "two hundred fifty-six billion, six hundred five million, two hundred thirty-four thousand, five hundred thirty-two".