2505255242551 has 16 divisors (see below), whose sum is σ = 2578607589888. Its totient is φ = 2432745806400.

The previous prime is 2505255242507. The next prime is 2505255242557. The reversal of 2505255242551 is 1552425525052.

It is a cyclic number.

It is not a de Polignac number, because 2505255242551 - 2¹⁷ = 2505255111479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2505255242498 and 2505255242507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505255242557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32735491 + ... + 32811931.

It is an arithmetic number, because the mean of its divisors is an integer number (161162974368).

Almost surely, 2^{2505255242551} is an apocalyptic number.

2505255242551 is a deficient number, since it is larger than the sum of its proper divisors (73352347337).

2505255242551 is a wasteful number, since it uses less digits than its factorization.

2505255242551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81942.

The product of its (nonzero) digits is 1000000, while the sum is 43.

The spelling of 2505255242551 in words is "two trillion, five hundred five billion, two hundred fifty-five million, two hundred forty-two thousand, five hundred fifty-one".