625811 has 2 divisors, whose sum is σ = 625812. Its totient is φ = 625810.

The previous prime is 625789. The next prime is 625819. The reversal of 625811 is 118526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625811 - 2¹⁰ = 624787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (625819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312905 + 312906.

It is an arithmetic number, because the mean of its divisors is an integer number (312906).

2⁶²⁵⁸¹¹ is an apocalyptic number.

625811 is a deficient number, since it is larger than the sum of its proper divisors (1).

625811 is an equidigital number, since it uses as much as digits as its factorization.

625811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 23.

The square root of 625811 is about 791.0821701947. The cubic root of 625811 is about 85.5357624296.

The spelling of 625811 in words is "six hundred twenty-five thousand, eight hundred eleven".