25551231200200 has 24 divisors (see below), whose sum is σ = 59406612540930. Its totient is φ = 10220492480000.

The previous prime is 25551231200191. The next prime is 25551231200219. The reversal of 25551231200200 is 200213215552.

It can be written as a sum of positive squares in 3 ways, for example, as 22089078809604 + 3462152390596 = 4699902^2 + 1860686^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63878077801 + ... + 63878078200.

Almost surely, 2^{25551231200200} is an apocalyptic number.

25551231200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25551231200200 is an abundant number, since it is smaller than the sum of its proper divisors (33855381340730).

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

25551231200200 is a wasteful number, since it uses less digits than its factorization.

25551231200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127756156017 (or 127756156008 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 25551231200200 its reverse (200213215552), we get a palindrome (25751444415752).

The spelling of 25551231200200 in words is "twenty-five trillion, five hundred fifty-one billion, two hundred thirty-one million, two hundred thousand, two hundred".