7125382777 has 2 divisors, whose sum is σ = 7125382778. Its totient is φ = 7125382776.

The previous prime is 7125382769. The next prime is 7125382787. The reversal of 7125382777 is 7772835217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5960457616 + 1164925161 = 77204^2 + 34131^2 .

It is a cyclic number.

It is not a de Polignac number, because 7125382777 - 2³ = 7125382769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7125382777.

It is not a weakly prime, because it can be changed into another prime (7125382787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3562691388 + 3562691389.

It is an arithmetic number, because the mean of its divisors is an integer number (3562691389).

Almost surely, 2^7125382777 is an apocalyptic number.

It is an amenable number.

7125382777 is a deficient number, since it is larger than the sum of its proper divisors (1).

7125382777 is an equidigital number, since it uses as much as digits as its factorization.

7125382777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152480, while the sum is 49.

The square root of 7125382777 is about 84411.9824254827. The cubic root of 7125382777 is about 1924.2850239153.

The spelling of 7125382777 in words is "seven billion, one hundred twenty-five million, three hundred eighty-two thousand, seven hundred seventy-seven".