25557120338 has 8 divisors (see below), whose sum is σ = 38336877180. Its totient is φ = 12778161280.

The previous prime is 25557120331. The next prime is 25557120349. The reversal of 25557120338 is 83302175552.

It can be written as a sum of positive squares in 2 ways, for example, as 24413125009 + 1143995329 = 156247^2 + 33823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25557120295 and 25557120304.

It is not an unprimeable number, because it can be changed into a prime (25557120331) 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 3 ways as a sum of consecutive naturals, for example, 111623 + ... + 252138.

Almost surely, 2^25557120338 is an apocalyptic number.

25557120338 is a deficient number, since it is larger than the sum of its proper divisors (12779756842).

25557120338 is a wasteful number, since it uses less digits than its factorization.

25557120338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398892.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 25557120338 in words is "twenty-five billion, five hundred fifty-seven million, one hundred twenty thousand, three hundred thirty-eight".