725840377 has 2 divisors, whose sum is σ = 725840378. Its totient is φ = 725840376.

The previous prime is 725840363. The next prime is 725840389. The reversal of 725840377 is 773048527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559842921 + 165997456 = 23661^2 + 12884^2 .

It is a cyclic number.

It is not a de Polignac number, because 725840377 - 2⁷ = 725840249 is a prime.

It is not a weakly prime, because it can be changed into another prime (725840327) 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, 362920188 + 362920189.

It is an arithmetic number, because the mean of its divisors is an integer number (362920189).

Almost surely, 2^725840377 is an apocalyptic number.

It is an amenable number.

725840377 is a deficient number, since it is larger than the sum of its proper divisors (1).

725840377 is an equidigital number, since it uses as much as digits as its factorization.

725840377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 725840377 is about 26941.4249251965. The cubic root of 725840377 is about 898.6978605665.

The spelling of 725840377 in words is "seven hundred twenty-five million, eight hundred forty thousand, three hundred seventy-seven".