25438965382 has 4 divisors (see below), whose sum is σ = 38158448076. Its totient is φ = 12719482690.

The previous prime is 25438965361. The next prime is 25438965407. The reversal of 25438965382 is 28356983452.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6359741344 + ... + 6359741347.

It is an arithmetic number, because the mean of its divisors is an integer number (9539612019).

Almost surely, 2^25438965382 is an apocalyptic number.

25438965382 is a deficient number, since it is larger than the sum of its proper divisors (12719482694).

25438965382 is a wasteful number, since it uses less digits than its factorization.

25438965382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12719482693.

The product of its digits is 12441600, while the sum is 55.

The spelling of 25438965382 in words is "twenty-five billion, four hundred thirty-eight million, nine hundred sixty-five thousand, three hundred eighty-two".