25447964713 has 4 divisors (see below), whose sum is σ = 25483858180. Its totient is φ = 25412071248.

The previous prime is 25447964701. The next prime is 25447964741. The reversal of 25447964713 is 31746974452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17269113744 + 8178850969 = 131412^2 + 90437^2 .

It is a cyclic number.

It is not a de Polignac number, because 25447964713 - 2¹⁷ = 25447833641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25447964743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17945670 + ... + 17947087.

It is an arithmetic number, because the mean of its divisors is an integer number (6370964545).

Almost surely, 2^25447964713 is an apocalyptic number.

It is an amenable number.

25447964713 is a deficient number, since it is larger than the sum of its proper divisors (35893467).

25447964713 is an equidigital number, since it uses as much as digits as its factorization.

25447964713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35893466.

The product of its digits is 5080320, while the sum is 52.

The spelling of 25447964713 in words is "twenty-five billion, four hundred forty-seven million, nine hundred sixty-four thousand, seven hundred thirteen".