725333131 has 4 divisors (see below), whose sum is σ = 725389600. Its totient is φ = 725276664.

The previous prime is 725333057. The next prime is 725333149. The reversal of 725333131 is 131333527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 725333131 - 2⁷ = 725333003 is a prime.

It is a super-2 number, since 2×725333131² = 1052216301852526322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725333131.

It is not an unprimeable number, because it can be changed into a prime (725330131) 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 3 ways as a sum of consecutive naturals, for example, 1405 + ... + 38113.

It is an arithmetic number, because the mean of its divisors is an integer number (181347400).

Almost surely, 2^725333131 is an apocalyptic number.

725333131 is a deficient number, since it is larger than the sum of its proper divisors (56469).

725333131 is a wasteful number, since it uses less digits than its factorization.

725333131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56468.

The product of its digits is 5670, while the sum is 28.

The square root of 725333131 is about 26932.0094125930. The cubic root of 725333131 is about 898.4884632289.

Adding to 725333131 its reverse (131333527), we get a palindrome (856666658).

The spelling of 725333131 in words is "seven hundred twenty-five million, three hundred thirty-three thousand, one hundred thirty-one".