25005307013 has 4 divisors (see below), whose sum is σ = 25248077088. Its totient is φ = 24762536940.

The previous prime is 25005307009. The next prime is 25005307027. The reversal of 25005307013 is 31070350052.

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 not a de Polignac number, because 25005307013 - 2² = 25005307009 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 (25005307813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121384883 + ... + 121385088.

It is an arithmetic number, because the mean of its divisors is an integer number (6312019272).

Almost surely, 2^25005307013 is an apocalyptic number.

It is an amenable number.

25005307013 is a deficient number, since it is larger than the sum of its proper divisors (242770075).

25005307013 is a wasteful number, since it uses less digits than its factorization.

25005307013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242770074.

The product of its (nonzero) digits is 3150, while the sum is 26.

Adding to 25005307013 its reverse (31070350052), we get a palindrome (56075657065).

The spelling of 25005307013 in words is "twenty-five billion, five million, three hundred seven thousand, thirteen".