25683138 has 48 divisors (see below), whose sum is σ = 61411896. Its totient is φ = 7706880.

The previous prime is 25683127. The next prime is 25683149. The reversal of 25683138 is 83138652.

It is an interprime number because it is at equal distance from previous prime (25683127) and next prime (25683149).

It can be written as a sum of positive squares in 4 ways, for example, as 3470769 + 22212369 = 1863^2 + 4713^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8256 + ... + 10932.

Almost surely, 2^25683138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25683138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30705948).

25683138 is an abundant number, since it is smaller than the sum of its proper divisors (35728758).

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

25683138 is a wasteful number, since it uses less digits than its factorization.

25683138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739 (or 2736 counting only the distinct ones).

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

The square root of 25683138 is about 5067.8533917232. The cubic root of 25683138 is about 295.0412199416.

The spelling of 25683138 in words is "twenty-five million, six hundred eighty-three thousand, one hundred thirty-eight".