725382191 has 8 divisors (see below), whose sum is σ = 752556000. Its totient is φ = 698352480.

The previous prime is 725382181. The next prime is 725382277. The reversal of 725382191 is 191283527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-725382191 is a prime.

It is a super-3 number, since 3×725382191³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725382131) 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 7 ways as a sum of consecutive naturals, for example, 25715 + ... + 45956.

It is an arithmetic number, because the mean of its divisors is an integer number (94069500).

Almost surely, 2^725382191 is an apocalyptic number.

725382191 is a deficient number, since it is larger than the sum of its proper divisors (27173809).

725382191 is a wasteful number, since it uses less digits than its factorization.

725382191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72049.

The product of its digits is 30240, while the sum is 38.

The square root of 725382191 is about 26932.9202092903. The cubic root of 725382191 is about 898.5087200591.

The spelling of 725382191 in words is "seven hundred twenty-five million, three hundred eighty-two thousand, one hundred ninety-one".