25808268001 has 2 divisors, whose sum is σ = 25808268002. Its totient is φ = 25808268000.

The previous prime is 25808267999. The next prime is 25808268037. The reversal of 25808268001 is 10086280852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17043563601 + 8764704400 = 130551^2 + 93620^2 .

It is a cyclic number.

It is not a de Polignac number, because 25808268001 - 2¹ = 25808267999 is a prime.

It is a super-2 number, since 2×25808268001² (a number of 22 digits) contains 22 as substring.

Together with 25808267999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25808268071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12904134000 + 12904134001.

It is an arithmetic number, because the mean of its divisors is an integer number (12904134001).

Almost surely, 2^25808268001 is an apocalyptic number.

It is an amenable number.

25808268001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25808268001 is an equidigital number, since it uses as much as digits as its factorization.

25808268001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 25808268001 in words is "twenty-five billion, eight hundred eight million, two hundred sixty-eight thousand, one".