25555320022416 has 80 divisors (see below), whose sum is σ = 66425281009920. Its totient is φ = 8465879721600.

The previous prime is 25555320022381. The next prime is 25555320022417. The reversal of 25555320022416 is 61422002355552.

It is a super-2 number, since 2×25555320022416² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25555320022417) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 382239391 + ... + 382306241.

It is an arithmetic number, because the mean of its divisors is an integer number (830316012624).

Almost surely, 2^{25555320022416} is an apocalyptic number.

It is an amenable number.

25555320022416 is an abundant number, since it is smaller than the sum of its proper divisors (40869960987504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25555320022416 is a wasteful number, since it uses less digits than its factorization.

25555320022416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115884 (or 115878 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 25555320022416 its reverse (61422002355552), we get a palindrome (86977322377968).

The spelling of 25555320022416 in words is "twenty-five trillion, five hundred fifty-five billion, three hundred twenty million, twenty-two thousand, four hundred sixteen".