725782117 has 2 divisors, whose sum is σ = 725782118. Its totient is φ = 725782116.

The previous prime is 725782111. The next prime is 725782147. The reversal of 725782117 is 711287527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 725009476 + 772641 = 26926^2 + 879^2 .

It is an emirp because it is prime and its reverse (711287527) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725782117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725782117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725782111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362891058 + 362891059.

It is an arithmetic number, because the mean of its divisors is an integer number (362891059).

Almost surely, 2^725782117 is an apocalyptic number.

It is an amenable number.

725782117 is a deficient number, since it is larger than the sum of its proper divisors (1).

725782117 is an equidigital number, since it uses as much as digits as its factorization.

725782117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54880, while the sum is 40.

The square root of 725782117 is about 26940.3436689289. The cubic root of 725782117 is about 898.6738150877.

The spelling of 725782117 in words is "seven hundred twenty-five million, seven hundred eighty-two thousand, one hundred seventeen".