25801131 has 8 divisors (see below), whose sum is σ = 34816320. Its totient is φ = 16993352.

The previous prime is 25801103. The next prime is 25801133. The reversal of 25801131 is 13110852.

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 25801131 - 2⁶ = 25801067 is a prime.

It is a super-2 number, since 2×25801131² = 1331396721758322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25801098 and 25801107.

It is not an unprimeable number, because it can be changed into a prime (25801133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51561 + ... + 52058.

It is an arithmetic number, because the mean of its divisors is an integer number (4352040).

Almost surely, 2^25801131 is an apocalyptic number.

25801131 is a deficient number, since it is larger than the sum of its proper divisors (9015189).

25801131 is a wasteful number, since it uses less digits than its factorization.

25801131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103705.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 25801131 is about 5079.4813711638. The cubic root of 25801131 is about 295.4923540957.

Adding to 25801131 its reverse (13110852), we get a palindrome (38911983).

The spelling of 25801131 in words is "twenty-five million, eight hundred one thousand, one hundred thirty-one".