2545717309 has 8 divisors (see below), whose sum is σ = 2741152320. Its totient is φ = 2355358656.

The previous prime is 2545717271. The next prime is 2545717313. The reversal of 2545717309 is 9037175452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2545717309 - 2²⁹ = 2008846397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545717399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268049 + ... + 1270054.

It is an arithmetic number, because the mean of its divisors is an integer number (342644040).

Almost surely, 2^2545717309 is an apocalyptic number.

It is an amenable number.

2545717309 is a deficient number, since it is larger than the sum of its proper divisors (195435011).

2545717309 is a wasteful number, since it uses less digits than its factorization.

2545717309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538179.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 2545717309 is about 50455.1019124925. The cubic root of 2545717309 is about 1365.4319428046.

The spelling of 2545717309 in words is "two billion, five hundred forty-five million, seven hundred seventeen thousand, three hundred nine".