13012291225 has 6 divisors (see below), whose sum is σ = 16135241150. Its totient is φ = 10409832960.

The previous prime is 13012291223. The next prime is 13012291241. The reversal of 13012291225 is 52219221031.

It can be written as a sum of positive squares in 3 ways, for example, as 137077264 + 12875213961 = 11708^2 + 113469^2 .

It is not a de Polignac number, because 13012291225 - 2¹ = 13012291223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13012291193 and 13012291202.

It is not an unprimeable number, because it can be changed into a prime (13012291223) 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 5 ways as a sum of consecutive naturals, for example, 260245800 + ... + 260245849.

Almost surely, 2^13012291225 is an apocalyptic number.

It is an amenable number.

13012291225 is a deficient number, since it is larger than the sum of its proper divisors (3122949925).

13012291225 is an equidigital number, since it uses as much as digits as its factorization.

13012291225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520491659 (or 520491654 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 13012291225 in words is "thirteen billion, twelve million, two hundred ninety-one thousand, two hundred twenty-five".