201103521025 has 24 divisors (see below), whose sum is σ = 272596999104. Its totient is φ = 145956686400.

The previous prime is 201103520999. The next prime is 201103521029. The reversal of 201103521025 is 520125301102.

It is not a de Polignac number, because 201103521025 - 2¹¹ = 201103518977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201103520987 and 201103521005.

It is not an unprimeable number, because it can be changed into a prime (201103521029) 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 23 ways as a sum of consecutive naturals, for example, 616882 + ... + 884731.

It is an arithmetic number, because the mean of its divisors is an integer number (11358208296).

Almost surely, 2^201103521025 is an apocalyptic number.

201103521025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201103521025 is a deficient number, since it is larger than the sum of its proper divisors (71493478079).

201103521025 is a wasteful number, since it uses less digits than its factorization.

201103521025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502121 (or 1502116 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 201103521025 its reverse (520125301102), we get a palindrome (721228822127).

The spelling of 201103521025 in words is "two hundred one billion, one hundred three million, five hundred twenty-one thousand, twenty-five".