725905357 has 8 divisors (see below), whose sum is σ = 740547896. Its totient is φ = 711389952.

The previous prime is 725905343. The next prime is 725905361. The reversal of 725905357 is 753509527.

It can be written as a sum of positive squares in 4 ways, for example, as 27941796 + 697963561 = 5286^2 + 26419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725905357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725905057) 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 in 7 ways as a sum of consecutive naturals, for example, 20208 + ... + 43129.

It is an arithmetic number, because the mean of its divisors is an integer number (92568487).

Almost surely, 2^725905357 is an apocalyptic number.

It is an amenable number.

725905357 is a deficient number, since it is larger than the sum of its proper divisors (14642539).

725905357 is a wasteful number, since it uses less digits than its factorization.

725905357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63567.

The product of its (nonzero) digits is 330750, while the sum is 43.

The square root of 725905357 is about 26942.6308477847. The cubic root of 725905357 is about 898.7246780534.

The spelling of 725905357 in words is "seven hundred twenty-five million, nine hundred five thousand, three hundred fifty-seven".