725311843 has 4 divisors (see below), whose sum is σ = 725970528. Its totient is φ = 724653160.

The previous prime is 725311823. The next prime is 725311883. The reversal of 725311843 is 348113527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725311843 - 2⁹ = 725311331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725311799 and 725311808.

It is not an unprimeable number, because it can be changed into a prime (725311813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327688 + ... + 329893.

It is an arithmetic number, because the mean of its divisors is an integer number (181492632).

Almost surely, 2^725311843 is an apocalyptic number.

725311843 is a deficient number, since it is larger than the sum of its proper divisors (658685).

725311843 is a wasteful number, since it uses less digits than its factorization.

725311843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658684.

The product of its digits is 20160, while the sum is 34.

The square root of 725311843 is about 26931.6141922463. The cubic root of 725311843 is about 898.4796731486.

The spelling of 725311843 in words is "seven hundred twenty-five million, three hundred eleven thousand, eight hundred forty-three".