25660079 has 2 divisors, whose sum is σ = 25660080. Its totient is φ = 25660078.

The previous prime is 25660067. The next prime is 25660087. The reversal of 25660079 is 97006652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25660079 - 2¹² = 25655983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25660009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12830039 + 12830040.

It is an arithmetic number, because the mean of its divisors is an integer number (12830040).

Almost surely, 2^25660079 is an apocalyptic number.

25660079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25660079 is an equidigital number, since it uses as much as digits as its factorization.

25660079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 25660079 is about 5065.5778544999. The cubic root of 25660079 is about 294.9528949014.

The spelling of 25660079 in words is "twenty-five million, six hundred sixty thousand, seventy-nine".