2541667125545 has 16 divisors (see below), whose sum is σ = 3102681861648. Its totient is φ = 1998506726400.

The previous prime is 2541667125541. The next prime is 2541667125577. The reversal of 2541667125545 is 5455217661452.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 438494271721 + 2103172853824 = 662189^2 + 1450232^2 .

It is not a de Polignac number, because 2541667125545 - 2² = 2541667125541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2541667125541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18299444 + ... + 18437813.

It is an arithmetic number, because the mean of its divisors is an integer number (193917616353).

Almost surely, 2^{2541667125545} is an apocalyptic number.

It is an amenable number.

2541667125545 is a deficient number, since it is larger than the sum of its proper divisors (561014736103).

2541667125545 is a wasteful number, since it uses less digits than its factorization.

2541667125545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36737500.

The product of its digits is 10080000, while the sum is 53.

The spelling of 2541667125545 in words is "two trillion, five hundred forty-one billion, six hundred sixty-seven million, one hundred twenty-five thousand, five hundred forty-five".