725686833 has 8 divisors (see below), whose sum is σ = 969441696. Its totient is φ = 482861600.

The previous prime is 725686799. The next prime is 725686847. The reversal of 725686833 is 338686527.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725686833 is a prime.

It is a super-3 number, since 3×725686833³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (725686853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230583 + ... + 233708.

It is an arithmetic number, because the mean of its divisors is an integer number (121180212).

Almost surely, 2^725686833 is an apocalyptic number.

It is an amenable number.

725686833 is a deficient number, since it is larger than the sum of its proper divisors (243754863).

725686833 is a wasteful number, since it uses less digits than its factorization.

725686833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464815.

The product of its digits is 1451520, while the sum is 48.

The square root of 725686833 is about 26938.5751850390. The cubic root of 725686833 is about 898.6344860286.

It can be divided in two parts, 72568 and 6833, that added together give a triangular number (79401 = T₃₉₈).

The spelling of 725686833 in words is "seven hundred twenty-five million, six hundred eighty-six thousand, eight hundred thirty-three".