25025122144 has 96 divisors (see below), whose sum is σ = 54757557792. Its totient is φ = 11162112000.

The previous prime is 25025122141. The next prime is 25025122181. The reversal of 25025122144 is 44122152052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025122141) 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, 11185794 + ... + 11188030.

It is an arithmetic number, because the mean of its divisors is an integer number (570391227).

Almost surely, 2^25025122144 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 25025122144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27378778896).

25025122144 is an abundant number, since it is smaller than the sum of its proper divisors (29732435648).

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

25025122144 is a wasteful number, since it uses less digits than its factorization.

25025122144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 2832 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 25025122144 its reverse (44122152052), we get a palindrome (69147274196).

The spelling of 25025122144 in words is "twenty-five billion, twenty-five million, one hundred twenty-two thousand, one hundred forty-four".