201525224500 has 48 divisors (see below), whose sum is σ = 440204441040. Its totient is φ = 80596656000.

The previous prime is 201525224479. The next prime is 201525224513. The reversal of 201525224500 is 5422525102.

It can be written as a sum of positive squares in 8 ways, for example, as 213276816 + 201311947684 = 14604^2 + 448678^2 .

It is a super-2 number, since 2×201525224500² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3300246 + ... + 3360754.

It is an arithmetic number, because the mean of its divisors is an integer number (9170925855).

Almost surely, 2^201525224500 is an apocalyptic number.

201525224500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201525224500 is an abundant number, since it is smaller than the sum of its proper divisors (238679216540).

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

201525224500 is a wasteful number, since it uses less digits than its factorization.

201525224500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67189 (or 67177 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 201525224500 its reverse (5422525102), we get a palindrome (206947749602).

The spelling of 201525224500 in words is "two hundred one billion, five hundred twenty-five million, two hundred twenty-four thousand, five hundred".