25796017538 has 8 divisors (see below), whose sum is σ = 39942220800. Its totient is φ = 12481943940.

The previous prime is 25796017537. The next prime is 25796017567. The reversal of 25796017538 is 83571069752.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25796017538.

It is not an unprimeable number, because it can be changed into a prime (25796017537) 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 3 ways as a sum of consecutive naturals, for example, 208032338 + ... + 208032461.

It is an arithmetic number, because the mean of its divisors is an integer number (4992777600).

Almost surely, 2^25796017538 is an apocalyptic number.

25796017538 is a deficient number, since it is larger than the sum of its proper divisors (14146203262).

25796017538 is a wasteful number, since it uses less digits than its factorization.

25796017538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416064832.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 25796017538 in words is "twenty-five billion, seven hundred ninety-six million, seventeen thousand, five hundred thirty-eight".