25823281 has 8 divisors (see below), whose sum is σ = 28375200. Its totient is φ = 23305440.

The previous prime is 25823269. The next prime is 25823309. The reversal of 25823281 is 18232852.

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

It is a cyclic number.

It is not a de Polignac number, because 25823281 - 2¹³ = 25815089 is a prime.

It is a super-2 number, since 2×25823281² = 1333683683209922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25823381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6916 + ... + 9973.

It is an arithmetic number, because the mean of its divisors is an integer number (3546900).

Almost surely, 2^25823281 is an apocalyptic number.

It is an amenable number.

25823281 is a deficient number, since it is larger than the sum of its proper divisors (2551919).

25823281 is a wasteful number, since it uses less digits than its factorization.

25823281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17039.

The product of its digits is 7680, while the sum is 31.

The square root of 25823281 is about 5081.6612441209. The cubic root of 25823281 is about 295.5768889371.

The spelling of 25823281 in words is "twenty-five million, eight hundred twenty-three thousand, two hundred eighty-one".