3561125999 has 2 divisors, whose sum is σ = 3561126000. Its totient is φ = 3561125998.

The previous prime is 3561125987. The next prime is 3561126001. The reversal of 3561125999 is 9995211653.

3561125999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3561125999 is a prime.

Together with 3561126001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3561125959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780562999 + 1780563000.

It is an arithmetic number, because the mean of its divisors is an integer number (1780563000).

Almost surely, 2^3561125999 is an apocalyptic number.

3561125999 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561125999 is an equidigital number, since it uses as much as digits as its factorization.

3561125999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100, while the sum is 50.

The square root of 3561125999 is about 59675.1707077575. The cubic root of 3561125999 is about 1527.0823115897.

The spelling of 3561125999 in words is "three billion, five hundred sixty-one million, one hundred twenty-five thousand, nine hundred ninety-nine".