25031045005 has 4 divisors (see below), whose sum is σ = 30037254012. Its totient is φ = 20024836000.

The previous prime is 25031045003. The next prime is 25031045051. The reversal of 25031045005 is 50054013052.

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 11054840164 + 13976204841 = 105142^2 + 118221^2 .

It is not a de Polignac number, because 25031045005 - 2¹ = 25031045003 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 (25031045003) 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, 2503104496 + ... + 2503104505.

It is an arithmetic number, because the mean of its divisors is an integer number (7509313503).

Almost surely, 2^25031045005 is an apocalyptic number.

It is an amenable number.

25031045005 is a deficient number, since it is larger than the sum of its proper divisors (5006209007).

25031045005 is an equidigital number, since it uses as much as digits as its factorization.

25031045005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006209006.

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 25031045005 its reverse (50054013052), we get a palindrome (75085058057).

The spelling of 25031045005 in words is "twenty-five billion, thirty-one million, forty-five thousand, five".