51825631382581 has 8 divisors (see below), whose sum is σ = 59262511919744. Its totient is φ = 44397055573200.

The previous prime is 51825631382527. The next prime is 51825631382621. The reversal of 51825631382581 is 18528313652815.

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

It is a cyclic number.

It is not a de Polignac number, because 51825631382581 - 2¹¹ = 51825631380533 is a prime.

It is a super-2 number, since 2×51825631382581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51825631382881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2076168570 + ... + 2076193531.

It is an arithmetic number, because the mean of its divisors is an integer number (7407813989968).

Almost surely, 2^{51825631382581} is an apocalyptic number.

It is an amenable number.

51825631382581 is a deficient number, since it is larger than the sum of its proper divisors (7436880537163).

51825631382581 is a wasteful number, since it uses less digits than its factorization.

51825631382581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4152363891.

The product of its digits is 13824000, while the sum is 58.

The spelling of 51825631382581 in words is "fifty-one trillion, eight hundred twenty-five billion, six hundred thirty-one million, three hundred eighty-two thousand, five hundred eighty-one".