725318678 has 12 divisors (see below), whose sum is σ = 1265607252. Its totient is φ = 310850820.

The previous prime is 725318677. The next prime is 725318701. The reversal of 725318678 is 876813527.

It is a happy number.

It is a congruent 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, 3700508 + ... + 3700703.

It is an arithmetic number, because the mean of its divisors is an integer number (105467271).

Almost surely, 2^725318678 is an apocalyptic number.

725318678 is a deficient number, since it is larger than the sum of its proper divisors (540288574).

725318678 is a wasteful number, since it uses less digits than its factorization.

725318678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7401227 (or 7401220 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 725318678 is about 26931.7410874232. The cubic root of 725318678 is about 898.4824954239.

The spelling of 725318678 in words is "seven hundred twenty-five million, three hundred eighteen thousand, six hundred seventy-eight".