25394 has 4 divisors (see below), whose sum is σ = 38094. Its totient is φ = 12696.

The previous prime is 25391. The next prime is 25409. The reversal of 25394 is 49352.

25394 = 91² + 92² + 93².

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., 24025 + 1369 = 155^2 + 37^2 .

It is a Curzon number.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25394.

It is not an unprimeable number, because it can be changed into a prime (25391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347 + ... + 6350.

2²⁵³⁹⁴ is an apocalyptic number.

25394 is a deficient number, since it is larger than the sum of its proper divisors (12700).

25394 is a wasteful number, since it uses less digits than its factorization.

25394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12699.

The product of its digits is 1080, while the sum is 23.

The square root of 25394 is about 159.3549497192. The cubic root of 25394 is about 29.3929858165.

The spelling of 25394 in words is "twenty-five thousand, three hundred ninety-four".