25403025023105 has 4 divisors (see below), whose sum is σ = 30483630027732. Its totient is φ = 20322420018480.

The previous prime is 25403025023083. The next prime is 25403025023141. The reversal of 25403025023105 is 50132052030452.

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 16117944560656 + 9285080462449 = 4014716^2 + 3047143^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25403025023105 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540302502306 + ... + 2540302502315.

It is an arithmetic number, because the mean of its divisors is an integer number (7620907506933).

Almost surely, 2^{25403025023105} is an apocalyptic number.

It is an amenable number.

25403025023105 is a deficient number, since it is larger than the sum of its proper divisors (5080605004627).

25403025023105 is an equidigital number, since it uses as much as digits as its factorization.

25403025023105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080605004626.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 25403025023105 its reverse (50132052030452), we get a palindrome (75535077053557).

The spelling of 25403025023105 in words is "twenty-five trillion, four hundred three billion, twenty-five million, twenty-three thousand, one hundred five".