256651536225060 has 144 divisors (see below), whose sum is σ = 815336851073472. Its totient is φ = 67762781712000.

The previous prime is 256651536225037. The next prime is 256651536225079. The reversal of 256651536225060 is 60522635156652.

256651536225060 is a `hidden beast` number, since 2 + 5 + 6 + 6 + 5 + 1 + 5 + 3 + 622 + 5 + 0 + 6 + 0 = 666.

It is a super-2 number, since 2×256651536225060² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 256651536224988 and 256651536225006.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260939626 + ... + 261921345.

It is an arithmetic number, because the mean of its divisors is an integer number (5662061465788).

Almost surely, 2^{256651536225060} is an apocalyptic number.

256651536225060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256651536225060 is an abundant number, since it is smaller than the sum of its proper divisors (558685314848412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256651536225060 is a wasteful number, since it uses less digits than its factorization.

256651536225060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522861096 (or 522861082 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 54.

The spelling of 256651536225060 in words is "two hundred fifty-six trillion, six hundred fifty-one billion, five hundred thirty-six million, two hundred twenty-five thousand, sixty".