25506116224 has 16 divisors (see below), whose sum is σ = 50812966170. Its totient is φ = 12753058048.

The previous prime is 25506116203. The next prime is 25506116297. The reversal of 25506116224 is 42261160552.

It can be written as a sum of positive squares in only one way, i.e., 16752642624 + 8753473600 = 129432^2 + 93560^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 25506116224.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99633139 + ... + 99633394.

Almost surely, 2^25506116224 is an apocalyptic number.

It is an amenable number.

25506116224 is a deficient number, since it is larger than the sum of its proper divisors (25306849946).

25506116224 is an equidigital number, since it uses as much as digits as its factorization.

25506116224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199266547 (or 199266535 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 25506116224 its reverse (42261160552), we get a palindrome (67767276776).

The spelling of 25506116224 in words is "twenty-five billion, five hundred six million, one hundred sixteen thousand, two hundred twenty-four".