25373351779 has 2 divisors, whose sum is σ = 25373351780. Its totient is φ = 25373351778.

The previous prime is 25373351747. The next prime is 25373351813. The reversal of 25373351779 is 97715337352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25373351779 - 2⁵ = 25373351747 is a prime.

It is not a weakly prime, because it can be changed into another prime (25373351719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12686675889 + 12686675890.

It is an arithmetic number, because the mean of its divisors is an integer number (12686675890).

Almost surely, 2^25373351779 is an apocalyptic number.

25373351779 is a deficient number, since it is larger than the sum of its proper divisors (1).

25373351779 is an equidigital number, since it uses as much as digits as its factorization.

25373351779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4167450, while the sum is 52.

The spelling of 25373351779 in words is "twenty-five billion, three hundred seventy-three million, three hundred fifty-one thousand, seven hundred seventy-nine".