25081128 has 48 divisors (see below), whose sum is σ = 68620500. Its totient is φ = 8275200.

The previous prime is 25081123. The next prime is 25081151. The reversal of 25081128 is 82118052.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 101124 = 4998^2 + 318^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25081123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5548 + ... + 8996.

Almost surely, 2^25081128 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 25081128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34310250).

25081128 is an abundant number, since it is smaller than the sum of its proper divisors (43539372).

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

25081128 is a wasteful number, since it uses less digits than its factorization.

25081128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562 (or 3555 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 25081128 is about 5008.1062289053. The cubic root of 25081128 is about 292.7177252487.

The spelling of 25081128 in words is "twenty-five million, eighty-one thousand, one hundred twenty-eight".