25000014999979 has 2 divisors, whose sum is σ = 25000014999980. Its totient is φ = 25000014999978.

The previous prime is 25000014999943. The next prime is 25000015000007. The reversal of 25000014999979 is 97999941000052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25000014999979 - 2²¹ = 25000012902827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25000014999979.

It is not a weakly prime, because it can be changed into another prime (25000014949979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500007499989 + 12500007499990.

It is an arithmetic number, because the mean of its divisors is an integer number (12500007499990).

Almost surely, 2^{25000014999979} is an apocalyptic number.

25000014999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25000014999979 is an equidigital number, since it uses as much as digits as its factorization.

25000014999979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16533720, while the sum is 64.

The spelling of 25000014999979 in words is "twenty-five trillion, fourteen million, nine hundred ninety-nine thousand, nine hundred seventy-nine".