25984231 has 32 divisors (see below), whose sum is σ = 33775616. Its totient is φ = 19440000.

The previous prime is 25984223. The next prime is 25984241. The reversal of 25984231 is 13248952.

It is a 7-Lehmer number, since φ(25984231) divides (25984231-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 25984231 - 2³ = 25984223 is a prime.

It is a super-2 number, since 2×25984231² = 1350360521322722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25984241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172006 + ... + 172156.

It is an arithmetic number, because the mean of its divisors is an integer number (1055488).

Almost surely, 2^25984231 is an apocalyptic number.

25984231 is a deficient number, since it is larger than the sum of its proper divisors (7791385).

25984231 is a wasteful number, since it uses less digits than its factorization.

25984231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its digits is 17280, while the sum is 34.

The square root of 25984231 is about 5097.4730013998. The cubic root of 25984231 is about 296.1897029330.

The spelling of 25984231 in words is "twenty-five million, nine hundred eighty-four thousand, two hundred thirty-one".