201505124225 has 24 divisors (see below), whose sum is σ = 253095288960. Its totient is φ = 159121984320.

The previous prime is 201505124173. The next prime is 201505124237. The reversal of 201505124225 is 522421505102.

It is a happy number.

201505124225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201505124225 - 2¹⁰ = 201505123201 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9147074 + ... + 9169076.

It is an arithmetic number, because the mean of its divisors is an integer number (10545637040).

Almost surely, 2^201505124225 is an apocalyptic number.

201505124225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201505124225 is a deficient number, since it is larger than the sum of its proper divisors (51590164735).

201505124225 is a wasteful number, since it uses less digits than its factorization.

201505124225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26729 (or 26724 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 201505124225 its reverse (522421505102), we get a palindrome (723926629327).

The spelling of 201505124225 in words is "two hundred one billion, five hundred five million, one hundred twenty-four thousand, two hundred twenty-five".