20432705265025 has 27 divisors (see below), whose sum is σ = 25592754442729. Its totient is φ = 16182512900000.

The previous prime is 20432705265019. The next prime is 20432705265043. The reversal of 20432705265025 is 52056250723402.

The square root of 20432705265025 is 4520255.

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

It can be written as a sum of positive squares in 4 ways, for example, as 3772789562689 + 16659915702336 = 1942367^2 + 4081656^2 .

It is not a de Polignac number, because 20432705265025 - 2⁷ = 20432705264897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2282724300 + ... + 2282733250.

Almost surely, 2^{20432705265025} is an apocalyptic number.

20432705265025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20432705265025 is the 4520255-th square number.

20432705265025 is the 2260128-th centered octagonal number.

It is an amenable number.

20432705265025 is a deficient number, since it is larger than the sum of its proper divisors (5160049177704).

20432705265025 is an frugal number, since it uses more digits than its factorization.

20432705265025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114 (or 9057 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 43.

Adding to 20432705265025 its reverse (52056250723402), we get a palindrome (72488955988427).

The spelling of 20432705265025 in words is "twenty trillion, four hundred thirty-two billion, seven hundred five million, two hundred sixty-five thousand, twenty-five".