2505522355521 has 16 divisors (see below), whose sum is σ = 3629958819840. Its totient is φ = 1531388874960.

The previous prime is 2505522355519. The next prime is 2505522355573. The reversal of 2505522355521 is 1255532255052.

It is a happy number.

It is not a de Polignac number, because 2505522355521 - 2¹ = 2505522355519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505522350521) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 708974565 + ... + 708978098.

It is an arithmetic number, because the mean of its divisors is an integer number (226872426240).

Almost surely, 2^{2505522355521} is an apocalyptic number.

It is an amenable number.

2505522355521 is a deficient number, since it is larger than the sum of its proper divisors (1124436464319).

2505522355521 is a wasteful number, since it uses less digits than its factorization.

2505522355521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417952716.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 2505522355521 in words is "two trillion, five hundred five billion, five hundred twenty-two million, three hundred fifty-five thousand, five hundred twenty-one".