25233440208 has 80 divisors (see below), whose sum is σ = 68656605696. Its totient is φ = 7970216320.

The previous prime is 25233440191. The next prime is 25233440209. The reversal of 25233440208 is 80204433252.

It is a super-2 number, since 2×25233440208² (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 (25233440209) 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 15 ways as a sum of consecutive naturals, for example, 11323 + ... + 224933.

Almost surely, 2^25233440208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25233440208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34328302848).

25233440208 is an abundant number, since it is smaller than the sum of its proper divisors (43423165488).

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

25233440208 is a wasteful number, since it uses less digits than its factorization.

25233440208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213752 (or 213746 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The spelling of 25233440208 in words is "twenty-five billion, two hundred thirty-three million, four hundred forty thousand, two hundred eight".