25705947514 has 16 divisors (see below), whose sum is σ = 43710518880. Its totient is φ = 11239847280.

The previous prime is 25705947511. The next prime is 25705947521. The reversal of 25705947514 is 41574950752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25705947511) 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 in 7 ways as a sum of consecutive naturals, for example, 26017672 + ... + 26018659.

It is an arithmetic number, because the mean of its divisors is an integer number (2731907430).

Almost surely, 2^25705947514 is an apocalyptic number.

25705947514 is a deficient number, since it is larger than the sum of its proper divisors (18004571366).

25705947514 is a wasteful number, since it uses less digits than its factorization.

25705947514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52036365.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 25705947514 in words is "twenty-five billion, seven hundred five million, nine hundred forty-seven thousand, five hundred fourteen".