2505307 has 16 divisors (see below), whose sum is σ = 3119040. Its totient is φ = 1963008.

The previous prime is 2505301. The next prime is 2505311. The reversal of 2505307 is 7035052.

It is a 10-Lehmer number, since φ(2505307) divides (2505307-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 2505307 - 2¹⁵ = 2472539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4119 + ... + 4687.

It is an arithmetic number, because the mean of its divisors is an integer number (194940).

2^2505307 is an apocalyptic number.

2505307 is a deficient number, since it is larger than the sum of its proper divisors (613733).

2505307 is a wasteful number, since it uses less digits than its factorization.

2505307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 2505307 is about 1582.8161611508. The cubic root of 2505307 is about 135.8168490499.

The spelling of 2505307 in words is "two million, five hundred five thousand, three hundred seven".