25915679 has 2 divisors, whose sum is σ = 25915680. Its totient is φ = 25915678.

The previous prime is 25915663. The next prime is 25915709. The reversal of 25915679 is 97651952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25915679 - 2⁴ = 25915663 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 (25915619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12957839 + 12957840.

It is an arithmetic number, because the mean of its divisors is an integer number (12957840).

Almost surely, 2^25915679 is an apocalyptic number.

25915679 is a deficient number, since it is larger than the sum of its proper divisors (1).

25915679 is an equidigital number, since it uses as much as digits as its factorization.

25915679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 44.

The square root of 25915679 is about 5090.7444445778. The cubic root of 25915679 is about 295.9290027860.

The spelling of 25915679 in words is "twenty-five million, nine hundred fifteen thousand, six hundred seventy-nine".