25064403979 has 2 divisors, whose sum is σ = 25064403980. Its totient is φ = 25064403978.

The previous prime is 25064403971. The next prime is 25064404003. The reversal of 25064403979 is 97930446052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25064403979 - 2³ = 25064403971 is a prime.

It is a super-2 number, since 2×25064403979² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25064403971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12532201989 + 12532201990.

It is an arithmetic number, because the mean of its divisors is an integer number (12532201990).

Almost surely, 2^25064403979 is an apocalyptic number.

25064403979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25064403979 is an equidigital number, since it uses as much as digits as its factorization.

25064403979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 25064403979 in words is "twenty-five billion, sixty-four million, four hundred three thousand, nine hundred seventy-nine".