7925641357 has 2 divisors, whose sum is σ = 7925641358. Its totient is φ = 7925641356.

The previous prime is 7925641343. The next prime is 7925641379. The reversal of 7925641357 is 7531465297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4803737481 + 3121903876 = 69309^2 + 55874^2 .

It is an emirp because it is prime and its reverse (7531465297) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7925641357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7925641357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7925641327) 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, 3962820678 + 3962820679.

It is an arithmetic number, because the mean of its divisors is an integer number (3962820679).

Almost surely, 2^7925641357 is an apocalyptic number.

It is an amenable number.

7925641357 is a deficient number, since it is larger than the sum of its proper divisors (1).

7925641357 is an equidigital number, since it uses as much as digits as its factorization.

7925641357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 49.

The square root of 7925641357 is about 89026.0712207385. The cubic root of 7925641357 is about 1993.7841480222.

The spelling of 7925641357 in words is "seven billion, nine hundred twenty-five million, six hundred forty-one thousand, three hundred fifty-seven".