2545744609 has 8 divisors (see below), whose sum is σ = 2609323200. Its totient is φ = 2482364976.

The previous prime is 2545744541. The next prime is 2545744631. The reversal of 2545744609 is 9064475452.

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 2545744609 - 2²⁷ = 2411526881 is a prime.

It is a super-2 number, since 2×2545744609² = 12961631228505125762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545744639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23662 + ... + 75175.

It is an arithmetic number, because the mean of its divisors is an integer number (326165400).

Almost surely, 2^2545744609 is an apocalyptic number.

It is an amenable number.

2545744609 is a deficient number, since it is larger than the sum of its proper divisors (63578591).

2545744609 is an equidigital number, since it uses as much as digits as its factorization.

2545744609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99479.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The square root of 2545744609 is about 50455.3724493240. The cubic root of 2545744609 is about 1365.4368237025.

The spelling of 2545744609 in words is "two billion, five hundred forty-five million, seven hundred forty-four thousand, six hundred nine".