2545212165 has 16 divisors (see below), whose sum is σ = 4286673600. Its totient is φ = 1286001792.

The previous prime is 2545212149. The next prime is 2545212169. The reversal of 2545212165 is 5612125452.

It is not a de Polignac number, because 2545212165 - 2⁴ = 2545212149 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545212169) 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, 4465000 + ... + 4465569.

It is an arithmetic number, because the mean of its divisors is an integer number (267917100).

Almost surely, 2^2545212165 is an apocalyptic number.

It is an amenable number.

2545212165 is a deficient number, since it is larger than the sum of its proper divisors (1741461435).

2545212165 is a wasteful number, since it uses less digits than its factorization.

2545212165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930596.

The product of its digits is 24000, while the sum is 33.

The square root of 2545212165 is about 50450.0957878179. The cubic root of 2545212165 is about 1365.3416230904.

It can be divided in two parts, 254521 and 2165, that added together give a triangular number (256686 = T₇₁₆).

The spelling of 2545212165 in words is "two billion, five hundred forty-five million, two hundred twelve thousand, one hundred sixty-five".