7725810061 has 2 divisors, whose sum is σ = 7725810062. Its totient is φ = 7725810060.

The previous prime is 7725810011. The next prime is 7725810073. The reversal of 7725810061 is 1600185277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6996486025 + 729324036 = 83645^2 + 27006^2 .

It is an emirp because it is prime and its reverse (1600185277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7725810061 - 2⁷ = 7725809933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7725810061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7725810011) 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, 3862905030 + 3862905031.

It is an arithmetic number, because the mean of its divisors is an integer number (3862905031).

Almost surely, 2^7725810061 is an apocalyptic number.

It is an amenable number.

7725810061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7725810061 is an equidigital number, since it uses as much as digits as its factorization.

7725810061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 7725810061 is about 87896.5873114537. The cubic root of 7725810061 is about 1976.8847093256.

The spelling of 7725810061 in words is "seven billion, seven hundred twenty-five million, eight hundred ten thousand, sixty-one".