725667670 has 64 divisors (see below), whose sum is σ = 1624404096. Its totient is φ = 227266560.

The previous prime is 725667647. The next prime is 725667671. The reversal of 725667670 is 76766527.

725667670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 725667670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725667671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84160 + ... + 92380.

It is an arithmetic number, because the mean of its divisors is an integer number (25381314).

Almost surely, 2^725667670 is an apocalyptic number.

725667670 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

725667670 is an abundant number, since it is smaller than the sum of its proper divisors (898736426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725667670 is a wasteful number, since it uses less digits than its factorization.

725667670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8345.

The product of its (nonzero) digits is 740880, while the sum is 46.

The square root of 725667670 is about 26938.2195031520. The cubic root of 725667670 is about 898.6265759663.

The spelling of 725667670 in words is "seven hundred twenty-five million, six hundred sixty-seven thousand, six hundred seventy".