2505662403389 has 16 divisors (see below), whose sum is σ = 2682442033920. Its totient is φ = 2335906198080.

The previous prime is 2505662403383. The next prime is 2505662403407. The reversal of 2505662403389 is 9833042665052.

2505662403389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2505662403389 - 2²⁴ = 2505645626173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2505662403389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505662403383) 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, 8772389 + ... + 9053514.

It is an arithmetic number, because the mean of its divisors is an integer number (167652627120).

Almost surely, 2^{2505662403389} is an apocalyptic number.

2505662403389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2505662403389 is a deficient number, since it is larger than the sum of its proper divisors (176779630531).

2505662403389 is a wasteful number, since it uses less digits than its factorization.

2505662403389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17826100.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 2505662403389 in words is "two trillion, five hundred five billion, six hundred sixty-two million, four hundred three thousand, three hundred eighty-nine".