1025720099 has 2 divisors, whose sum is σ = 1025720100. Its totient is φ = 1025720098.

The previous prime is 1025720021. The next prime is 1025720117. The reversal of 1025720099 is 9900275201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1025720099 - 2⁸ = 1025719843 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1025723099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512860049 + 512860050.

It is an arithmetic number, because the mean of its divisors is an integer number (512860050).

Almost surely, 2^1025720099 is an apocalyptic number.

1025720099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025720099 is an equidigital number, since it uses as much as digits as its factorization.

1025720099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 1025720099 is about 32026.8652696451. The cubic root of 1025720099 is about 1008.5008963220.

The spelling of 1025720099 in words is "one billion, twenty-five million, seven hundred twenty thousand, ninety-nine".