12547225 has 6 divisors (see below), whose sum is σ = 15558590. Its totient is φ = 10037760.

The previous prime is 12547187. The next prime is 12547237. The reversal of 12547225 is 52274521.

It can be written as a sum of positive squares in 3 ways, for example, as 4096576 + 8450649 = 2024^2 + 2907^2 .

It is not a de Polignac number, because 12547225 - 2¹¹ = 12545177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12547193 and 12547202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250920 + ... + 250969.

Almost surely, 2^12547225 is an apocalyptic number.

It is an amenable number.

12547225 is a deficient number, since it is larger than the sum of its proper divisors (3011365).

12547225 is an equidigital number, since it uses as much as digits as its factorization.

12547225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501899 (or 501894 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 12547225 is about 3542.2062334088. The cubic root of 12547225 is about 232.3713397686.

The spelling of 12547225 in words is "twelve million, five hundred forty-seven thousand, two hundred twenty-five".