2545617605 has 16 divisors (see below), whose sum is σ = 3091944960. Its totient is φ = 2011734912.

The previous prime is 2545617601. The next prime is 2545617629. The reversal of 2545617605 is 5067165452.

It is a cyclic number.

It is not a de Polignac number, because 2545617605 - 2² = 2545617601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545617601) 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 15 ways as a sum of consecutive naturals, for example, 659792 + ... + 663638.

It is an arithmetic number, because the mean of its divisors is an integer number (193246560).

Almost surely, 2^2545617605 is an apocalyptic number.

It is an amenable number.

2545617605 is a deficient number, since it is larger than the sum of its proper divisors (546327355).

2545617605 is a wasteful number, since it uses less digits than its factorization.

2545617605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 2545617605 is about 50454.1138560574. The cubic root of 2545617605 is about 1365.4141166824.

The spelling of 2545617605 in words is "two billion, five hundred forty-five million, six hundred seventeen thousand, six hundred five".