2545468665 has 32 divisors (see below), whose sum is σ = 4331349120. Its totient is φ = 1272858624.

The previous prime is 2545468661. The next prime is 2545468691. The reversal of 2545468665 is 5668645452.

It is not a de Polignac number, because 2545468665 - 2² = 2545468661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2545468661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18394 + ... + 73683.

It is an arithmetic number, because the mean of its divisors is an integer number (135354660).

Almost surely, 2^2545468665 is an apocalyptic number.

It is an amenable number.

2545468665 is a deficient number, since it is larger than the sum of its proper divisors (1785880455).

2545468665 is a wasteful number, since it uses less digits than its factorization.

2545468665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92201.

The product of its digits is 6912000, while the sum is 51.

The square root of 2545468665 is about 50452.6378398593. The cubic root of 2545468665 is about 1365.3874867669.

The spelling of 2545468665 in words is "two billion, five hundred forty-five million, four hundred sixty-eight thousand, six hundred sixty-five".