25315430205 has 96 divisors (see below), whose sum is σ = 45526136832. Its totient is φ = 11998022400.

The previous prime is 25315430141. The next prime is 25315430209. The reversal of 25315430205 is 50203451352.

It is not a de Polignac number, because 25315430205 - 2⁶ = 25315430141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315430209) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7737720 + ... + 7740990.

It is an arithmetic number, because the mean of its divisors is an integer number (474230592).

Almost surely, 2^25315430205 is an apocalyptic number.

It is an amenable number.

25315430205 is a deficient number, since it is larger than the sum of its proper divisors (20210706627).

25315430205 is a wasteful number, since it uses less digits than its factorization.

25315430205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419 (or 3406 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 25315430205 its reverse (50203451352), we get a palindrome (75518881557).

The spelling of 25315430205 in words is "twenty-five billion, three hundred fifteen million, four hundred thirty thousand, two hundred five".