25853971 has 8 divisors (see below), whose sum is σ = 30374064. Its totient is φ = 21695520.

The previous prime is 25853959. The next prime is 25853999. The reversal of 25853971 is 17935852.

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

It is not a de Polignac number, because 25853971 - 2⁵ = 25853939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25853911) 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, 90256 + ... + 90541.

It is an arithmetic number, because the mean of its divisors is an integer number (3796758).

Almost surely, 2^25853971 is an apocalyptic number.

25853971 is a deficient number, since it is larger than the sum of its proper divisors (4520093).

25853971 is a wasteful number, since it uses less digits than its factorization.

25853971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180821.

The product of its digits is 75600, while the sum is 40.

The square root of 25853971 is about 5084.6800292644. The cubic root of 25853971 is about 295.6939365924.

It can be divided in two parts, 2585 and 3971, that added together give a palindrome (6556).

The spelling of 25853971 in words is "twenty-five million, eight hundred fifty-three thousand, nine hundred seventy-one".