20632162621225 has 24 divisors (see below), whose sum is σ = 25651419528728. Its totient is φ = 16462167321600.

The previous prime is 20632162621199. The next prime is 20632162621237. The reversal of 20632162621225 is 52212626123602.

It can be written as a sum of positive squares in 12 ways, for example, as 5713495845264 + 14918666775961 = 2390292^2 + 3862469^2 .

It is not a de Polignac number, because 20632162621225 - 2¹³ = 20632162613033 is a prime.

It is a super-2 number, since 2×20632162621225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85045297 + ... + 85287553.

Almost surely, 2^{20632162621225} is an apocalyptic number.

20632162621225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20632162621225 is a deficient number, since it is larger than the sum of its proper divisors (5019256907503).

20632162621225 is a wasteful number, since it uses less digits than its factorization.

20632162621225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251245 (or 251240 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 20632162621225 its reverse (52212626123602), we get a palindrome (72844788744827).

The spelling of 20632162621225 in words is "twenty trillion, six hundred thirty-two billion, one hundred sixty-two million, six hundred twenty-one thousand, two hundred twenty-five".