253522121200 has 60 divisors (see below), whose sum is σ = 609365494888. Its totient is φ = 101362464000.

The previous prime is 253522121189. The next prime is 253522121207. The reversal of 253522121200 is 2121225352.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253522121207) 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 11 ways as a sum of consecutive naturals, for example, 737350 + ... + 1025050.

Almost surely, 2^253522121200 is an apocalyptic number.

253522121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253522121200 is an abundant number, since it is smaller than the sum of its proper divisors (355843373688).

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

253522121200 is a wasteful number, since it uses less digits than its factorization.

253522121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289922 (or 289911 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 253522121200 its reverse (2121225352), we get a palindrome (255643346552).

The spelling of 253522121200 in words is "two hundred fifty-three billion, five hundred twenty-two million, one hundred twenty-one thousand, two hundred".