25138 has 4 divisors (see below), whose sum is σ = 37710. Its totient is φ = 12568.

The previous prime is 25127. The next prime is 25147. The reversal of 25138 is 83152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13689 + 11449 = 117^2 + 107^2 .

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6283 + ... + 6286.

2²⁵¹³⁸ is an apocalyptic number.

25138 is a deficient number, since it is larger than the sum of its proper divisors (12572).

25138 is a wasteful number, since it uses less digits than its factorization.

25138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12571.

The product of its digits is 240, while the sum is 19.

The square root of 25138 is about 158.5496767578. The cubic root of 25138 is about 29.2938806154.

It can be divided in two parts, 251 and 38, that added together give a square (289 = 17²).

The spelling of 25138 in words is "twenty-five thousand, one hundred thirty-eight".