25369 has 4 divisors (see below), whose sum is σ = 26496. Its totient is φ = 24244.

The previous prime is 25367. The next prime is 25373. The reversal of 25369 is 96352.

25369 = T₃₅ + T₃₆ + ... + T₅₇.

25369 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25369 - 2¹ = 25367 is a prime.

It is a super-2 number, since 2×25369² = 1287172322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25367) 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 in 3 ways as a sum of consecutive naturals, for example, 529 + ... + 574.

It is an arithmetic number, because the mean of its divisors is an integer number (6624).

2²⁵³⁶⁹ is an apocalyptic number.

It is an amenable number.

25369 is a deficient number, since it is larger than the sum of its proper divisors (1127).

25369 is a wasteful number, since it uses less digits than its factorization.

25369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 1620, while the sum is 25.

The square root of 25369 is about 159.2764891627. The cubic root of 25369 is about 29.3833370029.

The spelling of 25369 in words is "twenty-five thousand, three hundred sixty-nine".