25513111135 has 16 divisors (see below), whose sum is σ = 31609239552. Its totient is φ = 19748397600.

The previous prime is 25513111133. The next prime is 25513111147. The reversal of 25513111135 is 53111131552.

It is not a de Polignac number, because 25513111135 - 2¹ = 25513111133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25513111133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058670 + ... + 1082500.

It is an arithmetic number, because the mean of its divisors is an integer number (1975577472).

Almost surely, 2^25513111135 is an apocalyptic number.

25513111135 is a deficient number, since it is larger than the sum of its proper divisors (6096128417).

25513111135 is a wasteful number, since it uses less digits than its factorization.

25513111135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30774.

The product of its digits is 2250, while the sum is 28.

Adding to 25513111135 its reverse (53111131552), we get a palindrome (78624242687).

The spelling of 25513111135 in words is "twenty-five billion, five hundred thirteen million, one hundred eleven thousand, one hundred thirty-five".