2545123303205 has 16 divisors (see below), whose sum is σ = 3491259461760. Its totient is φ = 1744825084992.

The previous prime is 2545123303201. The next prime is 2545123303241. The reversal of 2545123303205 is 5023033215452.

It is a cyclic number.

It is not a de Polignac number, because 2545123303205 - 2² = 2545123303201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545123303201) 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, 8227694 + ... + 8531423.

It is an arithmetic number, because the mean of its divisors is an integer number (218203716360).

Almost surely, 2^{2545123303205} is an apocalyptic number.

It is an amenable number.

2545123303205 is a deficient number, since it is larger than the sum of its proper divisors (946136158555).

2545123303205 is a wasteful number, since it uses less digits than its factorization.

2545123303205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16763468.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 2545123303205 its reverse (5023033215452), we get a palindrome (7568156518657).

The spelling of 2545123303205 in words is "two trillion, five hundred forty-five billion, one hundred twenty-three million, three hundred three thousand, two hundred five".