210025521200 has 240 divisors, whose sum is σ = 604627372800. Its totient is φ = 69206860800.

The previous prime is 210025521163. The next prime is 210025521253. The reversal of 210025521200 is 2125520012.

It is a happy number.

It is a super-2 number, since 2×210025521200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1868186 + ... + 1977414.

It is an arithmetic number, because the mean of its divisors is an integer number (2519280720).

Almost surely, 2^210025521200 is an apocalyptic number.

210025521200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210025521200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302313686400).

210025521200 is an abundant number, since it is smaller than the sum of its proper divisors (394601851600).

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

210025521200 is a wasteful number, since it uses less digits than its factorization.

210025521200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109300 (or 109289 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 210025521200 in words is "two hundred ten billion, twenty-five million, five hundred twenty-one thousand, two hundred".