25523460313 has 4 divisors (see below), whose sum is σ = 27486803428. Its totient is φ = 23560117200.

The previous prime is 25523460311. The next prime is 25523460353. The reversal of 25523460313 is 31306432552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2076807184 + 23446653129 = 45572^2 + 153123^2 .

It is a cyclic number.

It is not a de Polignac number, because 25523460313 - 2¹ = 25523460311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25523460311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981671538 + ... + 981671563.

It is an arithmetic number, because the mean of its divisors is an integer number (6871700857).

Almost surely, 2^25523460313 is an apocalyptic number.

It is an amenable number.

25523460313 is a deficient number, since it is larger than the sum of its proper divisors (1963343115).

25523460313 is a wasteful number, since it uses less digits than its factorization.

25523460313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963343114.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 25523460313 its reverse (31306432552), we get a palindrome (56829892865).

The spelling of 25523460313 in words is "twenty-five billion, five hundred twenty-three million, four hundred sixty thousand, three hundred thirteen".