25513115330 has 16 divisors (see below), whose sum is σ = 48624996600. Its totient is φ = 9604937472.

The previous prime is 25513115323. The next prime is 25513115357. The reversal of 25513115330 is 3351131552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25495466929 + 17648401 = 159673^2 + 4201^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25513115293 and 25513115302.

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, 75038405 + ... + 75038744.

Almost surely, 2^25513115330 is an apocalyptic number.

25513115330 is a deficient number, since it is larger than the sum of its proper divisors (23111881270).

25513115330 is a wasteful number, since it uses less digits than its factorization.

25513115330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150077173.

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 25513115330 its reverse (3351131552), we get a palindrome (28864246882).

The spelling of 25513115330 in words is "twenty-five billion, five hundred thirteen million, one hundred fifteen thousand, three hundred thirty".