25562 has 4 divisors (see below), whose sum is σ = 38346. Its totient is φ = 12780.

The previous prime is 25561. The next prime is 25577. The reversal of 25562 is 26552.

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., 19321 + 6241 = 139^2 + 79^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁹ + 5⁴ + 5⁶ + 6⁵ + 2¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (25561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6389 + ... + 6392.

2²⁵⁵⁶² is an apocalyptic number.

25562 is a deficient number, since it is larger than the sum of its proper divisors (12784).

25562 is a wasteful number, since it uses less digits than its factorization.

25562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12783.

The product of its digits is 600, while the sum is 20.

The square root of 25562 is about 159.8812058999. The cubic root of 25562 is about 29.4576621431.

Adding to 25562 its product of digits (600), we get a palindrome (26162).

Subtracting 25562 from its reverse (26552), we obtain a triangular number (990 = T₄₄).

The spelling of 25562 in words is "twenty-five thousand, five hundred sixty-two".