2501241554521 has 2 divisors, whose sum is σ = 2501241554522. Its totient is φ = 2501241554520.

The previous prime is 2501241554491. The next prime is 2501241554549. The reversal of 2501241554521 is 1254551421052.

2501241554521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2486894306121 + 14347248400 = 1576989^2 + 119780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501241554521 - 2¹¹ = 2501241552473 is a prime.

It is not a weakly prime, because it can be changed into another prime (2501241554551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250620777260 + 1250620777261.

It is an arithmetic number, because the mean of its divisors is an integer number (1250620777261).

Almost surely, 2^{2501241554521} is an apocalyptic number.

It is an amenable number.

2501241554521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501241554521 is an equidigital number, since it uses as much as digits as its factorization.

2501241554521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80000, while the sum is 37.

Adding to 2501241554521 its reverse (1254551421052), we get a palindrome (3755792975573).

The spelling of 2501241554521 in words is "two trillion, five hundred one billion, two hundred forty-one million, five hundred fifty-four thousand, five hundred twenty-one".