25244225313 has 4 divisors (see below), whose sum is σ = 33658967088. Its totient is φ = 16829483540.

The previous prime is 25244225297. The next prime is 25244225317. The reversal of 25244225313 is 31352244252.

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 25244225313 - 2⁴ = 25244225297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25244225317) 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, 4207370883 + ... + 4207370888.

It is an arithmetic number, because the mean of its divisors is an integer number (8414741772).

Almost surely, 2^25244225313 is an apocalyptic number.

It is an amenable number.

25244225313 is a deficient number, since it is larger than the sum of its proper divisors (8414741775).

25244225313 is an equidigital number, since it uses as much as digits as its factorization.

25244225313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414741774.

The product of its digits is 57600, while the sum is 33.

Adding to 25244225313 its reverse (31352244252), we get a palindrome (56596469565).

The spelling of 25244225313 in words is "twenty-five billion, two hundred forty-four million, two hundred twenty-five thousand, three hundred thirteen".