241221502505525 has 12 divisors (see below), whose sum is σ = 299118788175264. Its totient is φ = 192974540670000.

The previous prime is 241221502505513. The next prime is 241221502505527. The reversal of 241221502505525 is 525505205122142.

241221502505525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-241221502505525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241221502505527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64683311 + ... + 68310860.

It is an arithmetic number, because the mean of its divisors is an integer number (24926565681272).

Almost surely, 2^{241221502505525} is an apocalyptic number.

241221502505525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

241221502505525 is a deficient number, since it is larger than the sum of its proper divisors (57897285669739).

241221502505525 is a wasteful number, since it uses less digits than its factorization.

241221502505525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133066732 (or 133066727 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 41.

Adding to 241221502505525 its reverse (525505205122142), we get a palindrome (766726707627667).

The spelling of 241221502505525 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred two million, five hundred five thousand, five hundred twenty-five".