25304112013 has 4 divisors (see below), whose sum is σ = 25459352128. Its totient is φ = 25148871900.

The previous prime is 25304111999. The next prime is 25304112019. The reversal of 25304112013 is 31021140352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25304112013 - 2²¹ = 25302014861 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 (25304112019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 77619813 + ... + 77620138.

It is an arithmetic number, because the mean of its divisors is an integer number (6364838032).

Almost surely, 2^25304112013 is an apocalyptic number.

It is an amenable number.

25304112013 is a deficient number, since it is larger than the sum of its proper divisors (155240115).

25304112013 is a wasteful number, since it uses less digits than its factorization.

25304112013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155240114.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 25304112013 its reverse (31021140352), we get a palindrome (56325252365).

The spelling of 25304112013 in words is "twenty-five billion, three hundred four million, one hundred twelve thousand, thirteen".