25733957538 has 8 divisors (see below), whose sum is σ = 51467915088. Its totient is φ = 8577985844.

The previous prime is 25733957533. The next prime is 25733957539. The reversal of 25733957538 is 83575933752.

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

25733957538 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25733957533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144496456 + ... + 2144496467.

It is an arithmetic number, because the mean of its divisors is an integer number (6433489386).

Almost surely, 2^25733957538 is an apocalyptic number.

25733957538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25733957538 is a wasteful number, since it uses less digits than its factorization.

25733957538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288992928.

The product of its digits is 23814000, while the sum is 57.

The spelling of 25733957538 in words is "twenty-five billion, seven hundred thirty-three million, nine hundred fifty-seven thousand, five hundred thirty-eight".