13512442225 has 12 divisors (see below), whose sum is σ = 16824960460. Its totient is φ = 10765094400.

The previous prime is 13512442219. The next prime is 13512442243. The reversal of 13512442225 is 52224421531.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 32535616 + 13479906609 = 5704^2 + 116103^2 .

It is not a de Polignac number, because 13512442225 - 2⁹ = 13512441713 is a prime.

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, 1115340 + ... + 1127389.

Almost surely, 2^13512442225 is an apocalyptic number.

It is an amenable number.

13512442225 is a deficient number, since it is larger than the sum of its proper divisors (3312518235).

13512442225 is a wasteful number, since it uses less digits than its factorization.

13512442225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242980 (or 2242975 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

Adding to 13512442225 its reverse (52224421531), we get a palindrome (65736863756).

The spelling of 13512442225 in words is "thirteen billion, five hundred twelve million, four hundred forty-two thousand, two hundred twenty-five".