25414144512 has 80 divisors (see below), whose sum is σ = 67754681280. Its totient is φ = 8465149952.

The previous prime is 25414144477. The next prime is 25414144523. The reversal of 25414144512 is 21544141452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389318 + ... + 2399930.

It is an arithmetic number, because the mean of its divisors is an integer number (846933516).

Almost surely, 2^25414144512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25414144512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33877340640).

25414144512 is an abundant number, since it is smaller than the sum of its proper divisors (42340536768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25414144512 is a wasteful number, since it uses less digits than its factorization.

25414144512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193 (or 12177 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

Adding to 25414144512 its reverse (21544141452), we get a palindrome (46958285964).

The spelling of 25414144512 in words is "twenty-five billion, four hundred fourteen million, one hundred forty-four thousand, five hundred twelve".