725691075 has 24 divisors (see below), whose sum is σ = 1219485936. Its totient is φ = 380688000.

The previous prime is 725691049. The next prime is 725691097. The reversal of 725691075 is 570196527.

It is not a de Polignac number, because 725691075 - 2⁶ = 725691011 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74736 + ... + 83885.

It is an arithmetic number, because the mean of its divisors is an integer number (50811914).

Almost surely, 2^725691075 is an apocalyptic number.

725691075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

725691075 is a deficient number, since it is larger than the sum of its proper divisors (493794861).

725691075 is a wasteful number, since it uses less digits than its factorization.

725691075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158695 (or 158690 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 725691075 is about 26938.6539196004. The cubic root of 725691075 is about 898.6362370135.

The spelling of 725691075 in words is "seven hundred twenty-five million, six hundred ninety-one thousand, seventy-five".