25969231 has 8 divisors (see below), whose sum is σ = 27296640. Its totient is φ = 24658392.

The previous prime is 25969211. The next prime is 25969243. The reversal of 25969231 is 13296952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25969231 is a prime.

It is a super-2 number, since 2×25969231² = 1348801917462722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25969211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (3412080).

Almost surely, 2^25969231 is an apocalyptic number.

25969231 is a deficient number, since it is larger than the sum of its proper divisors (1327409).

25969231 is a wasteful number, since it uses less digits than its factorization.

25969231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285.

The product of its digits is 29160, while the sum is 37.

The square root of 25969231 is about 5096.0014717423. The cubic root of 25969231 is about 296.1326978372.

The spelling of 25969231 in words is "twenty-five million, nine hundred sixty-nine thousand, two hundred thirty-one".