25516 has 6 divisors (see below), whose sum is σ = 44660. Its totient is φ = 12756.

The previous prime is 25471. The next prime is 25523. The reversal of 25516 is 61552.

It is a happy number.

25516 is nontrivially palindromic in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 25493 and 25502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3186 + ... + 3193.

2²⁵⁵¹⁶ is an apocalyptic number.

It is an amenable number.

25516 is a deficient number, since it is larger than the sum of its proper divisors (19144).

25516 is a wasteful number, since it uses less digits than its factorization.

25516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383 (or 6381 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 25516 is about 159.7372843140. The cubic root of 25516 is about 29.4399813918.

The spelling of 25516 in words is "twenty-five thousand, five hundred sixteen".