2505203989 has 2 divisors, whose sum is σ = 2505203990. Its totient is φ = 2505203988.

The previous prime is 2505203983. The next prime is 2505204001. The reversal of 2505203989 is 9893025052.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2321601489 + 183602500 = 48183^2 + 13550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505203989 - 2¹⁹ = 2504679701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505203983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252601994 + 1252601995.

It is an arithmetic number, because the mean of its divisors is an integer number (1252601995).

Almost surely, 2^2505203989 is an apocalyptic number.

It is an amenable number.

2505203989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505203989 is an equidigital number, since it uses as much as digits as its factorization.

2505203989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 2505203989 is about 50052.0128366482. The cubic root of 2505203989 is about 1358.1498755866.

The spelling of 2505203989 in words is "two billion, five hundred five million, two hundred three thousand, nine hundred eighty-nine".