25283128 has 64 divisors (see below), whose sum is σ = 53978400. Its totient is φ = 11020800.

The previous prime is 25283119. The next prime is 25283143. The reversal of 25283128 is 82138252.

It is a super-2 number, since 2×25283128² = 1278473122928768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25283128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250278 + ... + 250378.

Almost surely, 2^25283128 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 25283128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26989200).

25283128 is an abundant number, since it is smaller than the sum of its proper divisors (28695272).

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

25283128 is a wasteful number, since it uses less digits than its factorization.

25283128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 228 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 25283128 is about 5028.2330892670. The cubic root of 25283128 is about 293.5014612385.

The spelling of 25283128 in words is "twenty-five million, two hundred eighty-three thousand, one hundred twenty-eight".