25993485998 has 4 divisors (see below), whose sum is σ = 38990229000. Its totient is φ = 12996742998.

The previous prime is 25993485997. The next prime is 25993486003. The reversal of 25993485998 is 89958439952.

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

It is a super-2 number, since 2×25993485998² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25993485997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6498371498 + ... + 6498371501.

It is an arithmetic number, because the mean of its divisors is an integer number (9747557250).

Almost surely, 2^25993485998 is an apocalyptic number.

25993485998 is a deficient number, since it is larger than the sum of its proper divisors (12996743002).

25993485998 is a wasteful number, since it uses less digits than its factorization.

25993485998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12996743001.

The product of its digits is 251942400, while the sum is 71.

The spelling of 25993485998 in words is "twenty-five billion, nine hundred ninety-three million, four hundred eighty-five thousand, nine hundred ninety-eight".