2505247 has 2 divisors, whose sum is σ = 2505248. Its totient is φ = 2505246.

The previous prime is 2505227. The next prime is 2505253. The reversal of 2505247 is 7425052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2505247 - 2⁷ = 2505119 is a prime.

2505247 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252623 + 1252624.

It is an arithmetic number, because the mean of its divisors is an integer number (1252624).

2^2505247 is an apocalyptic number.

2505247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505247 is an equidigital number, since it uses as much as digits as its factorization.

2505247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 2505247 is about 1582.7972074780. The cubic root of 2505247 is about 135.8157648081.

The spelling of 2505247 in words is "two million, five hundred five thousand, two hundred forty-seven".