25138368 has 84 divisors (see below), whose sum is σ = 75879960. Its totient is φ = 7934976.

The previous prime is 25138363. The next prime is 25138391. The reversal of 25138368 is 86383152.

25138368 is a `hidden beast` number, since 2 + 513 + 83 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25138363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9796 + ... + 12092.

Almost surely, 2^25138368 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 25138368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37939980).

25138368 is an abundant number, since it is smaller than the sum of its proper divisors (50741592).

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

25138368 is a wasteful number, since it uses less digits than its factorization.

25138368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334 (or 2321 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 25138368 is about 5013.8177070971. The cubic root of 25138368 is about 292.9402356099.

The spelling of 25138368 in words is "twenty-five million, one hundred thirty-eight thousand, three hundred sixty-eight".