2545405662645 has 24 divisors (see below), whose sum is σ = 4412491200000. Its totient is φ = 1357409773536.

The previous prime is 2545405662641. The next prime is 2545405662647. The reversal of 2545405662645 is 5462665045452.

2545405662645 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 4 + 0 + 5 + 6 + 626 + 4 + 5 = 666.

It is not a de Polignac number, because 2545405662645 - 2² = 2545405662641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2545405662591 and 2545405662600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545405662641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2472645 + ... + 3347354.

It is an arithmetic number, because the mean of its divisors is an integer number (183853800000).

Almost surely, 2^{2545405662645} is an apocalyptic number.

It is an amenable number.

2545405662645 is a deficient number, since it is larger than the sum of its proper divisors (1867085537355).

2545405662645 is a wasteful number, since it uses less digits than its factorization.

2545405662645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5829729 (or 5829726 counting only the distinct ones).

The product of its (nonzero) digits is 34560000, while the sum is 54.

The spelling of 2545405662645 in words is "two trillion, five hundred forty-five billion, four hundred five million, six hundred sixty-two thousand, six hundred forty-five".