256421250062 has 8 divisors (see below), whose sum is σ = 384891240216. Its totient is φ = 128124169992.

The previous prime is 256421249951. The next prime is 256421250119. The reversal of 256421250062 is 260052124652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43223813 + ... + 43229744.

It is an arithmetic number, because the mean of its divisors is an integer number (48111405027).

Almost surely, 2^256421250062 is an apocalyptic number.

256421250062 is a deficient number, since it is larger than the sum of its proper divisors (128469990154).

256421250062 is a wasteful number, since it uses less digits than its factorization.

256421250062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86455042.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 256421250062 in words is "two hundred fifty-six billion, four hundred twenty-one million, two hundred fifty thousand, sixty-two".