2545123105 has 16 divisors (see below), whose sum is σ = 3491280000. Its totient is φ = 1744814592.

The previous prime is 2545123081. The next prime is 2545123109. The reversal of 2545123105 is 5013215452.

It is a cyclic number.

It is not a de Polignac number, because 2545123105 - 2⁵ = 2545123073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545123109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257617 + ... + 267313.

It is an arithmetic number, because the mean of its divisors is an integer number (218205000).

Almost surely, 2^2545123105 is an apocalyptic number.

It is an amenable number.

2545123105 is a deficient number, since it is larger than the sum of its proper divisors (946156895).

2545123105 is an equidigital number, since it uses as much as digits as its factorization.

2545123105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17208.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2545123105 is about 50449.2131256772. The cubic root of 2545123105 is about 1365.3256979290.

Adding to 2545123105 its reverse (5013215452), we get a palindrome (7558338557).

The spelling of 2545123105 in words is "two billion, five hundred forty-five million, one hundred twenty-three thousand, one hundred five".