725715830 has 32 divisors (see below), whose sum is σ = 1571477760. Its totient is φ = 235720800.

The previous prime is 725715827. The next prime is 725715847. The reversal of 725715830 is 38517527.

It is a happy number.

725715830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271496 + ... + 274155.

It is an arithmetic number, because the mean of its divisors is an integer number (49108680).

Almost surely, 2^725715830 is an apocalyptic number.

725715830 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

725715830 is an abundant number, since it is smaller than the sum of its proper divisors (845761930).

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

725715830 is a wasteful number, since it uses less digits than its factorization.

725715830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545684.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 725715830 is about 26939.1133855589. The cubic root of 725715830 is about 898.6464550837.

The spelling of 725715830 in words is "seven hundred twenty-five million, seven hundred fifteen thousand, eight hundred thirty".