25283988 has 60 divisors (see below), whose sum is σ = 67065460. Its totient is φ = 8304768.

The previous prime is 25283939. The next prime is 25284001. The reversal of 25283988 is 88938252.

25283988 is a `hidden beast` number, since 252 + 8 + 398 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13089924 + 12194064 = 3618^2 + 3492^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23118 + ... + 24186.

Almost surely, 2^25283988 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 25283988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33532730).

25283988 is an abundant number, since it is smaller than the sum of its proper divisors (41781472).

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

25283988 is a wasteful number, since it uses less digits than its factorization.

25283988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1147 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 25283988 is about 5028.3186056574. The cubic root of 25283988 is about 293.5047889965.

The spelling of 25283988 in words is "twenty-five million, two hundred eighty-three thousand, nine hundred eighty-eight".