20744335614025 has 81 divisors (see below), whose sum is σ = 26993736703999. Its totient is φ = 15813553840000.

The previous prime is 20744335613999. The next prime is 20744335614097. The reversal of 20744335614025 is 52041653344702.

The square root of 20744335614025 is 4554595.

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

It can be written as a sum of positive squares in 13 ways, for example, as 2013824942649 + 18730510671376 = 1419093^2 + 4327876^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20744335614025 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 66702043620 + ... + 66702043930.

Almost surely, 2^{20744335614025} is an apocalyptic number.

20744335614025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20744335614025 is the 4554595-th square number.

20744335614025 is the 2277298-th centered octagonal number.

It is an amenable number.

20744335614025 is a deficient number, since it is larger than the sum of its proper divisors (6249401089974).

20744335614025 is an frugal number, since it uses more digits than its factorization.

20744335614025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 46.

Adding to 20744335614025 its reverse (52041653344702), we get a palindrome (72785988958727).

The spelling of 20744335614025 in words is "twenty trillion, seven hundred forty-four billion, three hundred thirty-five million, six hundred fourteen thousand, twenty-five".