25305321120401 has 4 divisors (see below), whose sum is σ = 28920366994752. Its totient is φ = 21690275246052.

The previous prime is 25305321120341. The next prime is 25305321120407. The reversal of 25305321120401 is 10402112350352.

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 25305321120401 - 2⁶ = 25305321120337 is a prime.

It is a super-2 number, since 2×25305321120401² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25305321120407) 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, 1807522937165 + ... + 1807522937178.

It is an arithmetic number, because the mean of its divisors is an integer number (7230091748688).

Almost surely, 2^{25305321120401} is an apocalyptic number.

It is an amenable number.

25305321120401 is a deficient number, since it is larger than the sum of its proper divisors (3615045874351).

25305321120401 is an equidigital number, since it uses as much as digits as its factorization.

25305321120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615045874350.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 25305321120401 its reverse (10402112350352), we get a palindrome (35707433470753).

The spelling of 25305321120401 in words is "twenty-five trillion, three hundred five billion, three hundred twenty-one million, one hundred twenty thousand, four hundred one".