20625535422256 has 40 divisors (see below), whose sum is σ = 40491506145600. Its totient is φ = 10176267279360.

The previous prime is 20625535422241. The next prime is 20625535422269. The reversal of 20625535422256 is 65222453552602.

It is a super-2 number, since 2×20625535422256² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2613865 + ... + 6934216.

It is an arithmetic number, because the mean of its divisors is an integer number (1012287653640).

Almost surely, 2^{20625535422256} is an apocalyptic number.

It is an amenable number.

20625535422256 is a deficient number, since it is larger than the sum of its proper divisors (19865970723344).

20625535422256 is a wasteful number, since it uses less digits than its factorization.

20625535422256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549877 (or 9549871 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 49.

Adding to 20625535422256 its reverse (65222453552602), we get a palindrome (85847988974858).

The spelling of 20625535422256 in words is "twenty trillion, six hundred twenty-five billion, five hundred thirty-five million, four hundred twenty-two thousand, two hundred fifty-six".