25866231 has 16 divisors (see below), whose sum is σ = 37778400. Its totient is φ = 15669248.

The previous prime is 25866229. The next prime is 25866271. The reversal of 25866231 is 13266852.

It is a cyclic number.

It is not a de Polignac number, because 25866231 - 2¹ = 25866229 is a prime.

It is a super-2 number, since 2×25866231² = 1338123812290722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25866192 and 25866201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25866271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7266 + ... + 10223.

It is an arithmetic number, because the mean of its divisors is an integer number (2361150).

Almost surely, 2^25866231 is an apocalyptic number.

25866231 is a deficient number, since it is larger than the sum of its proper divisors (11912169).

25866231 is a wasteful number, since it uses less digits than its factorization.

25866231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17538.

The product of its digits is 17280, while the sum is 33.

The square root of 25866231 is about 5085.8854686279. The cubic root of 25866231 is about 295.7406687403.

The spelling of 25866231 in words is "twenty-five million, eight hundred sixty-six thousand, two hundred thirty-one".