25971541 has 2 divisors, whose sum is σ = 25971542. Its totient is φ = 25971540.

The previous prime is 25971523. The next prime is 25971557. The reversal of 25971541 is 14517952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15570916 + 10400625 = 3946^2 + 3225^2 .

It is a cyclic number.

It is not a de Polignac number, because 25971541 - 2¹³ = 25963349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25971497 and 25971506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25971511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12985770 + 12985771.

It is an arithmetic number, because the mean of its divisors is an integer number (12985771).

Almost surely, 2^25971541 is an apocalyptic number.

It is an amenable number.

25971541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25971541 is an equidigital number, since it uses as much as digits as its factorization.

25971541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 34.

The square root of 25971541 is about 5096.2281149886. The cubic root of 25971541 is about 296.1414780517.

The spelling of 25971541 in words is "twenty-five million, nine hundred seventy-one thousand, five hundred forty-one".