1306345225 has 6 divisors (see below), whose sum is σ = 1619868110. Its totient is φ = 1045076160.

The previous prime is 1306345207. The next prime is 1306345253. The reversal of 1306345225 is 5225436031.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8832784 + 1297512441 = 2972^2 + 36021^2 .

It is not a de Polignac number, because 1306345225 - 2⁹ = 1306344713 is a prime.

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, 26126880 + ... + 26126929.

Almost surely, 2^1306345225 is an apocalyptic number.

It is an amenable number.

1306345225 is a deficient number, since it is larger than the sum of its proper divisors (313522885).

1306345225 is an equidigital number, since it uses as much as digits as its factorization.

1306345225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52253819 (or 52253814 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1306345225 is about 36143.3980831908. The cubic root of 1306345225 is about 1093.1656771125.

The spelling of 1306345225 in words is "one billion, three hundred six million, three hundred forty-five thousand, two hundred twenty-five".