25853831 has 4 divisors (see below), whose sum is σ = 25919352. Its totient is φ = 25788312.

The previous prime is 25853809. The next prime is 25853837. The reversal of 25853831 is 13835852.

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 25853831 - 2¹⁰ = 25852807 is a prime.

It is a super-2 number, since 2×25853831² = 1336841154753122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25853791 and 25853800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25853837) 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, 32165 + ... + 32958.

It is an arithmetic number, because the mean of its divisors is an integer number (6479838).

Almost surely, 2^25853831 is an apocalyptic number.

25853831 is a deficient number, since it is larger than the sum of its proper divisors (65521).

25853831 is an equidigital number, since it uses as much as digits as its factorization.

25853831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65520.

The product of its digits is 28800, while the sum is 35.

The square root of 25853831 is about 5084.6662624011. Note that the first 3 decimals coincide. The cubic root of 25853831 is about 295.6934028610.

The spelling of 25853831 in words is "twenty-five million, eight hundred fifty-three thousand, eight hundred thirty-one".