2505963 has 4 divisors (see below), whose sum is σ = 3341288. Its totient is φ = 1670640.

The previous prime is 2505917. The next prime is 2505983. The reversal of 2505963 is 3695052.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2505963 - 2⁸ = 2505707 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2505963.

It is not an unprimeable number, because it can be changed into a prime (2505983) 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 in 3 ways as a sum of consecutive naturals, for example, 417658 + ... + 417663.

It is an arithmetic number, because the mean of its divisors is an integer number (835322).

2^2505963 is an apocalyptic number.

2505963 is a deficient number, since it is larger than the sum of its proper divisors (835325).

2505963 is an equidigital number, since it uses as much as digits as its factorization.

2505963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835324.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 2505963 is about 1583.0233731692. The cubic root of 2505963 is about 135.8287022982.

The spelling of 2505963 in words is "two million, five hundred five thousand, nine hundred sixty-three".