25867231 has 4 divisors (see below), whose sum is σ = 27857032. Its totient is φ = 23877432.

The previous prime is 25867223. The next prime is 25867241. The reversal of 25867231 is 13276852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25867231 - 2³ = 25867223 is a prime.

It is a super-2 number, since 2×25867231² = 1338227279214722, 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 (25867201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994881 + ... + 994906.

It is an arithmetic number, because the mean of its divisors is an integer number (6964258).

Almost surely, 2^25867231 is an apocalyptic number.

25867231 is a deficient number, since it is larger than the sum of its proper divisors (1989801).

25867231 is a wasteful number, since it uses less digits than its factorization.

25867231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989800.

The product of its digits is 20160, while the sum is 34.

The square root of 25867231 is about 5085.9837789753. The cubic root of 25867231 is about 295.7444798464.

The spelling of 25867231 in words is "twenty-five million, eight hundred sixty-seven thousand, two hundred thirty-one".