1306625 has 8 divisors (see below), whose sum is σ = 1630824. Its totient is φ = 1045200.

The previous prime is 1306601. The next prime is 1306633. The reversal of 1306625 is 5266031.

It can be written as a sum of positive squares in 4 ways, for example, as 16129 + 1290496 = 127^2 + 1136^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1306625 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1306625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5102 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (203853).

It is a Proth number, since it is equal to 319 ⋅ 2¹² + 1 and 319 < 2¹².

2^1306625 is an apocalyptic number.

It is an amenable number.

1306625 is a deficient number, since it is larger than the sum of its proper divisors (324199).

1306625 is an equidigital number, since it uses as much as digits as its factorization.

1306625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10468 (or 10458 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1306625 is about 1143.0769877834. The cubic root of 1306625 is about 109.3243711257.

The spelling of 1306625 in words is "one million, three hundred six thousand, six hundred twenty-five".