25971668 has 12 divisors (see below), whose sum is σ = 45493140. Its totient is φ = 12973632.

The previous prime is 25971661. The next prime is 25971677. The reversal of 25971668 is 86617952.

It can be written as a sum of positive squares in 2 ways, for example, as 13454224 + 12517444 = 3668^2 + 3538^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25971661) 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, 3128 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (3791095).

Almost surely, 2^25971668 is an apocalyptic number.

It is an amenable number.

25971668 is a deficient number, since it is larger than the sum of its proper divisors (19521472).

25971668 is a wasteful number, since it uses less digits than its factorization.

25971668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106 (or 6104 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 25971668 is about 5096.2405751691. The cubic root of 25971668 is about 296.1419607583.

The spelling of 25971668 in words is "twenty-five million, nine hundred seventy-one thousand, six hundred sixty-eight".