25384700947 has 2 divisors, whose sum is σ = 25384700948. Its totient is φ = 25384700946.

The previous prime is 25384700903. The next prime is 25384700959. The reversal of 25384700947 is 74900748352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25384700947 - 2¹⁹ = 25384176659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25384700947.

It is not a weakly prime, because it can be changed into another prime (25384700347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12692350473 + 12692350474.

It is an arithmetic number, because the mean of its divisors is an integer number (12692350474).

Almost surely, 2^25384700947 is an apocalyptic number.

25384700947 is a deficient number, since it is larger than the sum of its proper divisors (1).

25384700947 is an equidigital number, since it uses as much as digits as its factorization.

25384700947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 25384700947 in words is "twenty-five billion, three hundred eighty-four million, seven hundred thousand, nine hundred forty-seven".