256252662142 has 16 divisors (see below), whose sum is σ = 406049374800. Its totient is φ = 120950867520.

The previous prime is 256252662121. The next prime is 256252662181. The reversal of 256252662142 is 241266252652.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 11988417 + ... + 12009772.

It is an arithmetic number, because the mean of its divisors is an integer number (25378085925).

Almost surely, 2^256252662142 is an apocalyptic number.

256252662142 is a deficient number, since it is larger than the sum of its proper divisors (149796712658).

256252662142 is a wasteful number, since it uses less digits than its factorization.

256252662142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23998491.

The product of its digits is 691200, while the sum is 43.

The spelling of 256252662142 in words is "two hundred fifty-six billion, two hundred fifty-two million, six hundred sixty-two thousand, one hundred forty-two".