25013421205203 has 16 divisors (see below), whose sum is σ = 33423731677440. Its totient is φ = 16639395204384.

The previous prime is 25013421205181. The next prime is 25013421205273. The reversal of 25013421205203 is 30250212431052.

It is not a de Polignac number, because 25013421205203 - 2²² = 25013417010899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25013421205273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041001 + ... + 7149162.

It is an arithmetic number, because the mean of its divisors is an integer number (2088983229840).

Almost surely, 2^{25013421205203} is an apocalyptic number.

25013421205203 is a deficient number, since it is larger than the sum of its proper divisors (8410310472237).

25013421205203 is a wasteful number, since it uses less digits than its factorization.

25013421205203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192378.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 25013421205203 its reverse (30250212431052), we get a palindrome (55263633636255).

The spelling of 25013421205203 in words is "twenty-five trillion, thirteen billion, four hundred twenty-one million, two hundred five thousand, two hundred three".