25000005000001 has 16 divisors (see below), whose sum is σ = 25523046976000. Its totient is φ = 24480838267200.

The previous prime is 25000004999939. The next prime is 25000005000029. The reversal of 25000005000001 is 10000050000052.

It is a cyclic number.

It is not a de Polignac number, because 25000005000001 - 2¹¹ = 25000004997953 is a prime.

It is the 5000001-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25000005000301) by changing a digit.

It is a nontrivial repunit in base 5000000.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12502840 + ... + 14363878.

It is an arithmetic number, because the mean of its divisors is an integer number (1595190436000).

Almost surely, 2^{25000005000001} is an apocalyptic number.

It is an amenable number.

25000005000001 is a deficient number, since it is larger than the sum of its proper divisors (523041975999).

25000005000001 is a wasteful number, since it uses less digits than its factorization.

25000005000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862080.

The product of its (nonzero) digits is 50, while the sum is 13.

Adding to 25000005000001 its reverse (10000050000052), we get a palindrome (35000055000053).

The spelling of 25000005000001 in words is "twenty-five trillion, five million, one", and thus it is an aban number and an uban number.