25431413045 has 4 divisors (see below), whose sum is σ = 30517695660. Its totient is φ = 20345130432.

The previous prime is 25431413027. The next prime is 25431413081. The reversal of 25431413045 is 54031413452.

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 8938946116 + 16492466929 = 94546^2 + 128423^2 .

It is a cyclic number.

It is not a de Polignac number, because 25431413045 - 2⁸ = 25431412789 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 2543141300 + ... + 2543141309.

It is an arithmetic number, because the mean of its divisors is an integer number (7629423915).

Almost surely, 2^25431413045 is an apocalyptic number.

It is an amenable number.

25431413045 is a deficient number, since it is larger than the sum of its proper divisors (5086282615).

25431413045 is an equidigital number, since it uses as much as digits as its factorization.

25431413045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086282614.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 25431413045 its reverse (54031413452), we get a palindrome (79462826497).

The spelling of 25431413045 in words is "twenty-five billion, four hundred thirty-one million, four hundred thirteen thousand, forty-five".