725133639 has 8 divisors (see below), whose sum is σ = 989329792. Its totient is φ = 472179960.

The previous prime is 725133637. The next prime is 725133683. The reversal of 725133639 is 936331527.

725133639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 725133639 - 2¹ = 725133637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725133597 and 725133606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725133637) 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, 2810467 + ... + 2810724.

It is an arithmetic number, because the mean of its divisors is an integer number (123666224).

Almost surely, 2^725133639 is an apocalyptic number.

725133639 is a deficient number, since it is larger than the sum of its proper divisors (264196153).

725133639 is a wasteful number, since it uses less digits than its factorization.

725133639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5621237.

The product of its digits is 102060, while the sum is 39.

The square root of 725133639 is about 26928.3055352542. The cubic root of 725133639 is about 898.4060837503.

The spelling of 725133639 in words is "seven hundred twenty-five million, one hundred thirty-three thousand, six hundred thirty-nine".