725202557 has 2 divisors, whose sum is σ = 725202558. Its totient is φ = 725202556.

The previous prime is 725202539. The next prime is 725202559. The reversal of 725202557 is 755202527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502028836 + 223173721 = 22406^2 + 14939^2 .

It is a cyclic number.

It is not a de Polignac number, because 725202557 - 2⁶ = 725202493 is a prime.

Together with 725202559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725202559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362601278 + 362601279.

It is an arithmetic number, because the mean of its divisors is an integer number (362601279).

Almost surely, 2^725202557 is an apocalyptic number.

It is an amenable number.

725202557 is a deficient number, since it is larger than the sum of its proper divisors (1).

725202557 is an equidigital number, since it uses as much as digits as its factorization.

725202557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 725202557 is about 26929.5851620481. The cubic root of 725202557 is about 898.4345448898.

The spelling of 725202557 in words is "seven hundred twenty-five million, two hundred two thousand, five hundred fifty-seven".