25513044130 has 24 divisors (see below), whose sum is σ = 53421191388. Its totient is φ = 8747329248.

The previous prime is 25513044103. The next prime is 25513044133. The reversal of 25513044130 is 3144031552.

It can be written as a sum of positive squares in 2 ways, for example, as 22228722649 + 3284321481 = 149093^2 + 57309^2 .

It is not an unprimeable number, because it can be changed into a prime (25513044133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26033229 + ... + 26034208.

Almost surely, 2^25513044130 is an apocalyptic number.

25513044130 is an abundant number, since it is smaller than the sum of its proper divisors (27908147258).

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

25513044130 is a wasteful number, since it uses less digits than its factorization.

25513044130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52067458 (or 52067451 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 25513044130 its reverse (3144031552), we get a palindrome (28657075682).

The spelling of 25513044130 in words is "twenty-five billion, five hundred thirteen million, forty-four thousand, one hundred thirty".