725318667 has 6 divisors (see below), whose sum is σ = 1047682532. Its totient is φ = 483545772.

The previous prime is 725318611. The next prime is 725318677. The reversal of 725318667 is 766813527.

It is not a de Polignac number, because 725318667 - 2¹⁰ = 725317643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725318677) 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 5 ways as a sum of consecutive naturals, for example, 40295473 + ... + 40295490.

Almost surely, 2^725318667 is an apocalyptic number.

725318667 is a deficient number, since it is larger than the sum of its proper divisors (322363865).

725318667 is a wasteful number, since it uses less digits than its factorization.

725318667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80590969 (or 80590966 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 725318667 is about 26931.7408832032. The cubic root of 725318667 is about 898.4824908819.

The spelling of 725318667 in words is "seven hundred twenty-five million, three hundred eighteen thousand, six hundred sixty-seven".