725002657 has 2 divisors, whose sum is σ = 725002658. Its totient is φ = 725002656.

The previous prime is 725002637. The next prime is 725002667. The reversal of 725002657 is 756200527.

It is a happy number.

725002657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 711342241 + 13660416 = 26671^2 + 3696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725002657 is a prime.

It is not a weakly prime, because it can be changed into another prime (725002637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362501328 + 362501329.

It is an arithmetic number, because the mean of its divisors is an integer number (362501329).

Almost surely, 2^725002657 is an apocalyptic number.

It is an amenable number.

725002657 is a deficient number, since it is larger than the sum of its proper divisors (1).

725002657 is an equidigital number, since it uses as much as digits as its factorization.

725002657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 725002657 is about 26925.8733748787. The cubic root of 725002657 is about 898.3519870039.

It can be divided in two parts, 72500 and 2657, that added together give a palindrome (75157).

The spelling of 725002657 in words is "seven hundred twenty-five million, two thousand, six hundred fifty-seven".