25804312001 has 4 divisors (see below), whose sum is σ = 27789259092. Its totient is φ = 23819364912.

The previous prime is 25804311979. The next prime is 25804312057. The reversal of 25804312001 is 10021340852.

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 15839481025 + 9964830976 = 125855^2 + 99824^2 .

It is a cyclic number.

It is not a de Polignac number, because 25804312001 - 2¹⁸ = 25804049857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25804312601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992473526 + ... + 992473551.

It is an arithmetic number, because the mean of its divisors is an integer number (6947314773).

Almost surely, 2^25804312001 is an apocalyptic number.

It is an amenable number.

25804312001 is a deficient number, since it is larger than the sum of its proper divisors (1984947091).

25804312001 is a wasteful number, since it uses less digits than its factorization.

25804312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984947090.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 25804312001 its reverse (10021340852), we get a palindrome (35825652853).

The spelling of 25804312001 in words is "twenty-five billion, eight hundred four million, three hundred twelve thousand, one".