20006485525321 has 9 divisors (see below), whose sum is σ = 20025688034541. Its totient is φ = 19987301424492.

The previous prime is 20006485525249. The next prime is 20006485525331. The reversal of 20006485525321 is 12352558460002.

The square root of 20006485525321 is 4472861.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 20006485525321 - 2⁴¹ = 17807462269769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006485525331) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7993001356 + ... + 7993003858.

Almost surely, 2^{20006485525321} is an apocalyptic number.

20006485525321 is the 4472861-st square number.

20006485525321 is the 2236431-st centered octagonal number.

It is an amenable number.

20006485525321 is a deficient number, since it is larger than the sum of its proper divisors (19202509220).

20006485525321 is an frugal number, since it uses more digits than its factorization.

20006485525321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 20006485525321 in words is "twenty trillion, six billion, four hundred eighty-five million, five hundred twenty-five thousand, three hundred twenty-one".