2505623 has 2 divisors, whose sum is σ = 2505624. Its totient is φ = 2505622.

The previous prime is 2505611. The next prime is 2505631. The reversal of 2505623 is 3265052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2505623 - 2¹⁴ = 2489239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505673) 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, 1252811 + 1252812.

It is an arithmetic number, because the mean of its divisors is an integer number (1252812).

2^2505623 is an apocalyptic number.

2505623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505623 is an equidigital number, since it uses as much as digits as its factorization.

2505623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2505623 is about 1582.9159800823. The cubic root of 2505623 is about 135.8225591046.

The spelling of 2505623 in words is "two million, five hundred five thousand, six hundred twenty-three".