725264693 has 8 divisors (see below), whose sum is σ = 768270168. Its totient is φ = 682297344.

The previous prime is 725264689. The next prime is 725264717. The reversal of 725264693 is 396462527.

It can be written as a sum of positive squares in 4 ways, for example, as 405498769 + 319765924 = 20137^2 + 17882^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 725264693 - 2² = 725264689 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 (725264893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35855 + ... + 52307.

It is an arithmetic number, because the mean of its divisors is an integer number (96033771).

Almost surely, 2^725264693 is an apocalyptic number.

It is an amenable number.

725264693 is a deficient number, since it is larger than the sum of its proper divisors (43005475).

725264693 is a wasteful number, since it uses less digits than its factorization.

725264693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19063.

The product of its digits is 544320, while the sum is 44.

The square root of 725264693 is about 26930.7388127396. The cubic root of 725264693 is about 898.4602037139.

The spelling of 725264693 in words is "seven hundred twenty-five million, two hundred sixty-four thousand, six hundred ninety-three".