1306725 has 48 divisors (see below), whose sum is σ = 2618880. Its totient is φ = 561600.

The previous prime is 1306717. The next prime is 1306733. The reversal of 1306725 is 5276031.

It is an interprime number because it is at equal distance from previous prime (1306717) and next prime (1306733).

It is not a de Polignac number, because 1306725 - 2³ = 1306717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1306695 and 1306704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9910 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (54560).

2^1306725 is an apocalyptic number.

1306725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1306725 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1306725 is a wasteful number, since it uses less digits than its factorization.

1306725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 1306725 is about 1143.1207285322. The cubic root of 1306725 is about 109.3271600305.

The spelling of 1306725 in words is "one million, three hundred six thousand, seven hundred twenty-five".