25053205128 has 128 divisors (see below), whose sum is σ = 72561899520. Its totient is φ = 7060515840.

The previous prime is 25053205127. The next prime is 25053205159. The reversal of 25053205128 is 82150235052.

It is not an unprimeable number, because it can be changed into a prime (25053205123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4329325 + ... + 4335107.

It is an arithmetic number, because the mean of its divisors is an integer number (566889840).

Almost surely, 2^25053205128 is an apocalyptic number.

25053205128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25053205128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36280949760).

25053205128 is an abundant number, since it is smaller than the sum of its proper divisors (47508694392).

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

25053205128 is a wasteful number, since it uses less digits than its factorization.

25053205128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6147 (or 6143 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

It can be divided in two parts, 25053 and 205128, that added together give a triangular number (230181 = T₆₇₈).

The spelling of 25053205128 in words is "twenty-five billion, fifty-three million, two hundred five thousand, one hundred twenty-eight".