2505517 has 6 divisors (see below), whose sum is σ = 2914638. Its totient is φ = 2147544.

The previous prime is 2505499. The next prime is 2505527. The reversal of 2505517 is 7155052.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2414916 + 90601 = 1554^2 + 301^2 .

It is not a de Polignac number, because 2505517 - 2¹¹ = 2503469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2505491 and 2505500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25518 + ... + 25615.

It is an arithmetic number, because the mean of its divisors is an integer number (485773).

2^2505517 is an apocalyptic number.

It is an amenable number.

2505517 is a deficient number, since it is larger than the sum of its proper divisors (409121).

2505517 is an equidigital number, since it uses as much as digits as its factorization.

2505517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51147 (or 51140 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 2505517 is about 1582.8824972183. The cubic root of 2505517 is about 135.8206437600.

The spelling of 2505517 in words is "two million, five hundred five thousand, five hundred seventeen".