785125577 has 2 divisors, whose sum is σ = 785125578. Its totient is φ = 785125576.

The previous prime is 785125541. The next prime is 785125609. The reversal of 785125577 is 775521587.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 740982841 + 44142736 = 27221^2 + 6644^2 .

It is a cyclic number.

It is not a de Polignac number, because 785125577 - 2⁶ = 785125513 is a prime.

It is not a weakly prime, because it can be changed into another prime (785125507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392562788 + 392562789.

It is an arithmetic number, because the mean of its divisors is an integer number (392562789).

Almost surely, 2^785125577 is an apocalyptic number.

It is an amenable number.

785125577 is a deficient number, since it is larger than the sum of its proper divisors (1).

785125577 is an equidigital number, since it uses as much as digits as its factorization.

785125577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 686000, while the sum is 47.

The square root of 785125577 is about 28020.0923802903. The cubic root of 785125577 is about 922.5283230019.

The spelling of 785125577 in words is "seven hundred eighty-five million, one hundred twenty-five thousand, five hundred seventy-seven".