789725513 has 2 divisors, whose sum is σ = 789725514. Its totient is φ = 789725512.

The previous prime is 789725483. The next prime is 789725533. The reversal of 789725513 is 315527987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781034809 + 8690704 = 27947^2 + 2948^2 .

It is an emirp because it is prime and its reverse (315527987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 789725513 - 2⁸ = 789725257 is a prime.

It is a super-2 number, since 2×789725513² = 1247332771766226338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (789725533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394862756 + 394862757.

It is an arithmetic number, because the mean of its divisors is an integer number (394862757).

Almost surely, 2^789725513 is an apocalyptic number.

It is an amenable number.

789725513 is a deficient number, since it is larger than the sum of its proper divisors (1).

789725513 is an equidigital number, since it uses as much as digits as its factorization.

789725513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 47.

The square root of 789725513 is about 28102.0553162931. The cubic root of 789725513 is about 924.3264687382.

The spelling of 789725513 in words is "seven hundred eighty-nine million, seven hundred twenty-five thousand, five hundred thirteen".