25089442579 has 2 divisors, whose sum is σ = 25089442580. Its totient is φ = 25089442578.

The previous prime is 25089442523. The next prime is 25089442607. The reversal of 25089442579 is 97524498052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25089442579 - 2⁹ = 25089442067 is a prime.

It is not a weakly prime, because it can be changed into another prime (25089442519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12544721289 + 12544721290.

It is an arithmetic number, because the mean of its divisors is an integer number (12544721290).

Almost surely, 2^25089442579 is an apocalyptic number.

25089442579 is a deficient number, since it is larger than the sum of its proper divisors (1).

25089442579 is an equidigital number, since it uses as much as digits as its factorization.

25089442579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 25089442579 in words is "twenty-five billion, eighty-nine million, four hundred forty-two thousand, five hundred seventy-nine".