25691411 has 2 divisors, whose sum is σ = 25691412. Its totient is φ = 25691410.

The previous prime is 25691389. The next prime is 25691417. The reversal of 25691411 is 11419652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25691411 - 2¹⁰ = 25690387 is a prime.

It is not a weakly prime, because it can be changed into another prime (25691417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12845705 + 12845706.

It is an arithmetic number, because the mean of its divisors is an integer number (12845706).

Almost surely, 2^25691411 is an apocalyptic number.

25691411 is a deficient number, since it is larger than the sum of its proper divisors (1).

25691411 is an equidigital number, since it uses as much as digits as its factorization.

25691411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 25691411 is about 5068.6695492999. The cubic root of 25691411 is about 295.0728958992.

The spelling of 25691411 in words is "twenty-five million, six hundred ninety-one thousand, four hundred eleven".