12565203045 has 16 divisors (see below), whose sum is σ = 20110549632. Its totient is φ = 6699366720.

The previous prime is 12565203043. The next prime is 12565203067. The reversal of 12565203045 is 54030256521.

It is not a de Polignac number, because 12565203045 - 2¹ = 12565203043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12565202997 and 12565203015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565203041) 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, 78982 + ... + 177111.

It is an arithmetic number, because the mean of its divisors is an integer number (1256909352).

Almost surely, 2^12565203045 is an apocalyptic number.

12565203045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12565203045 is a deficient number, since it is larger than the sum of its proper divisors (7545346587).

12565203045 is a wasteful number, since it uses less digits than its factorization.

12565203045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259372.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 12565203045 its reverse (54030256521), we get a palindrome (66595459566).

The spelling of 12565203045 in words is "twelve billion, five hundred sixty-five million, two hundred three thousand, forty-five".