2545131266045 has 16 divisors (see below), whose sum is σ = 3345324669360. Its totient is φ = 1850253640704.

The previous prime is 2545131266023. The next prime is 2545131266123. The reversal of 2545131266045 is 5406621315452.

It can be written as a sum of positive squares in 8 ways, for example, as 831918649 + 2544299347396 = 28843^2 + 1595086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545131266045 - 2¹⁸ = 2545131003901 is a prime.

It is a super-4 number, since 4×2545131266045⁴ (a number of 51 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2545131265987 and 2545131266005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516251342 + ... + 516256271.

It is an arithmetic number, because the mean of its divisors is an integer number (209082791835).

Almost surely, 2^{2545131266045} is an apocalyptic number.

It is an amenable number.

2545131266045 is a deficient number, since it is larger than the sum of its proper divisors (800193403315).

2545131266045 is a wasteful number, since it uses less digits than its factorization.

2545131266045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032507664.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 2545131266045 in words is "two trillion, five hundred forty-five billion, one hundred thirty-one million, two hundred sixty-six thousand, forty-five".