2505364989 has 4 divisors (see below), whose sum is σ = 3340486656. Its totient is φ = 1670243324.

The previous prime is 2505364957. The next prime is 2505364991. The reversal of 2505364989 is 9894635052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2505364989 - 2⁵ = 2505364957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505364189) 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 3 ways as a sum of consecutive naturals, for example, 417560829 + ... + 417560834.

It is an arithmetic number, because the mean of its divisors is an integer number (835121664).

Almost surely, 2^2505364989 is an apocalyptic number.

It is an amenable number.

2505364989 is a deficient number, since it is larger than the sum of its proper divisors (835121667).

2505364989 is an equidigital number, since it uses as much as digits as its factorization.

2505364989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835121666.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The square root of 2505364989 is about 50053.6211377359. The cubic root of 2505364989 is about 1358.1789693512.

The spelling of 2505364989 in words is "two billion, five hundred five million, three hundred sixty-four thousand, nine hundred eighty-nine".