3125000909 has 2 divisors, whose sum is σ = 3125000910. Its totient is φ = 3125000908.

The previous prime is 3125000839. The next prime is 3125000929. The reversal of 3125000909 is 9090005213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2838545284 + 286455625 = 53278^2 + 16925^2 .

It is a cyclic number.

It is not a de Polignac number, because 3125000909 - 2⁸ = 3125000653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3125000929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562500454 + 1562500455.

It is an arithmetic number, because the mean of its divisors is an integer number (1562500455).

Almost surely, 2^3125000909 is an apocalyptic number.

It is an amenable number.

3125000909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125000909 is an equidigital number, since it uses as much as digits as its factorization.

3125000909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 3125000909 is about 55901.7075678373. The cubic root of 3125000909 is about 1462.0090108628.

The spelling of 3125000909 in words is "three billion, one hundred twenty-five million, nine hundred nine", and thus it is an aban number.