12545210245 has 4 divisors (see below), whose sum is σ = 15054252300. Its totient is φ = 10036168192.

The previous prime is 12545210233. The next prime is 12545210267. The reversal of 12545210245 is 54201254521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9407642049 + 3137568196 = 96993^2 + 56014^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545210245 - 2³¹ = 10397726597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254521020 + ... + 1254521029.

It is an arithmetic number, because the mean of its divisors is an integer number (3763563075).

Almost surely, 2^12545210245 is an apocalyptic number.

It is an amenable number.

12545210245 is a deficient number, since it is larger than the sum of its proper divisors (2509042055).

12545210245 is an equidigital number, since it uses as much as digits as its factorization.

12545210245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509042054.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 12545210245 its reverse (54201254521), we get a palindrome (66746464766).

It can be divided in two parts, 125 and 45210245, that multiplied together give a square (5651280625 = 75175²).

The spelling of 12545210245 in words is "twelve billion, five hundred forty-five million, two hundred ten thousand, two hundred forty-five".