2545305 has 24 divisors (see below), whose sum is σ = 4738752. Its totient is φ = 1163232.

The previous prime is 2545271. The next prime is 2545307. The reversal of 2545305 is 5035452.

It is not a de Polignac number, because 2545305 - 2⁶ = 2545241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997 + ... + 2466.

It is an arithmetic number, because the mean of its divisors is an integer number (197448).

2^2545305 is an apocalyptic number.

It is an amenable number.

2545305 is a deficient number, since it is larger than the sum of its proper divisors (2193447).

2545305 is a wasteful number, since it uses less digits than its factorization.

2545305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485 (or 3478 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 2545305 is about 1595.4012034595. The cubic root of 2545305 is about 136.5358222879.

It can be divided in two parts, 2545 and 305, that added together give a triangular number (2850 = T₇₅).

The spelling of 2545305 in words is "two million, five hundred forty-five thousand, three hundred five".