25931439482 has 16 divisors (see below), whose sum is σ = 42479240832. Its totient is φ = 11799787440.

The previous prime is 25931439473. The next prime is 25931439487. The reversal of 25931439482 is 28493413952.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25931439482.

It is not an unprimeable number, because it can be changed into a prime (25931439487) 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 in 7 ways as a sum of consecutive naturals, for example, 7021838 + ... + 7025529.

It is an arithmetic number, because the mean of its divisors is an integer number (2654952552).

Almost surely, 2^25931439482 is an apocalyptic number.

25931439482 is a deficient number, since it is larger than the sum of its proper divisors (16547801350).

25931439482 is a wasteful number, since it uses less digits than its factorization.

25931439482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14047453.

The product of its digits is 1866240, while the sum is 50.

The spelling of 25931439482 in words is "twenty-five billion, nine hundred thirty-one million, four hundred thirty-nine thousand, four hundred eighty-two".