25697841 has 8 divisors (see below), whose sum is σ = 36899520. Its totient is φ = 15814032.

The previous prime is 25697827. The next prime is 25697873. The reversal of 25697841 is 14879652.

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

It is not a de Polignac number, because 25697841 - 2⁵ = 25697809 is a prime.

It is a super-2 number, since 2×25697841² = 1320758064122562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25697793 and 25697802.

It is not an unprimeable number, because it can be changed into a prime (25697801) 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, 329421 + ... + 329498.

It is an arithmetic number, because the mean of its divisors is an integer number (4612440).

Almost surely, 2^25697841 is an apocalyptic number.

It is an amenable number.

25697841 is a deficient number, since it is larger than the sum of its proper divisors (11201679).

25697841 is a wasteful number, since it uses less digits than its factorization.

25697841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658935.

The product of its digits is 120960, while the sum is 42.

The square root of 25697841 is about 5069.3037983534. The cubic root of 25697841 is about 295.0975106165.

The spelling of 25697841 in words is "twenty-five million, six hundred ninety-seven thousand, eight hundred forty-one".