13155232225 has 12 divisors (see below), whose sum is σ = 16397014636. Its totient is φ = 10469652480.

The previous prime is 13155232171. The next prime is 13155232249. The reversal of 13155232225 is 52223255131.

It can be written as a sum of positive squares in 6 ways, for example, as 3316377744 + 9838854481 = 57588^2 + 99191^2 .

It is not a de Polignac number, because 13155232225 - 2¹⁷ = 13155101153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1358412 + ... + 1368061.

Almost surely, 2^13155232225 is an apocalyptic number.

It is an amenable number.

13155232225 is a deficient number, since it is larger than the sum of its proper divisors (3241782411).

13155232225 is a wasteful number, since it uses less digits than its factorization.

13155232225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726676 (or 2726671 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

Adding to 13155232225 its reverse (52223255131), we get a palindrome (65378487356).

The spelling of 13155232225 in words is "thirteen billion, one hundred fifty-five million, two hundred thirty-two thousand, two hundred twenty-five".