1306512825 has 48 divisors (see below), whose sum is σ = 2239142400. Its totient is φ = 671500800.

The previous prime is 1306512821. The next prime is 1306512839. The reversal of 1306512825 is 5282156031.

It is not a de Polignac number, because 1306512825 - 2² = 1306512821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1306512821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 624381 + ... + 626469.

It is an arithmetic number, because the mean of its divisors is an integer number (46648800).

Almost surely, 2^1306512825 is an apocalyptic number.

1306512825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1306512825 is a deficient number, since it is larger than the sum of its proper divisors (932629575).

1306512825 is a wasteful number, since it uses less digits than its factorization.

1306512825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1306512825 is about 36145.7165512042. The cubic root of 1306512825 is about 1093.2124250240.

Adding to 1306512825 its reverse (5282156031), we get a palindrome (6588668856).

The spelling of 1306512825 in words is "one billion, three hundred six million, five hundred twelve thousand, eight hundred twenty-five".