725133 has 4 divisors (see below), whose sum is σ = 966848. Its totient is φ = 483420.

The previous prime is 725119. The next prime is 725147. The reversal of 725133 is 331527.

It is a happy number.

725133 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (725119) and next prime (725147).

It is not a de Polignac number, because 725133 - 2⁹ = 724621 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725113) 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, 120853 + ... + 120858.

It is an arithmetic number, because the mean of its divisors is an integer number (241712).

2⁷²⁵¹³³ is an apocalyptic number.

It is an amenable number.

725133 is a deficient number, since it is larger than the sum of its proper divisors (241715).

725133 is a wasteful number, since it uses less digits than its factorization.

725133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241714.

The product of its digits is 630, while the sum is 21.

The square root of 725133 is about 851.5474150040. The cubic root of 725133 is about 89.8405819853.

It can be divided in two parts, 725 and 133, that added together give a palindrome (858).

The spelling of 725133 in words is "seven hundred twenty-five thousand, one hundred thirty-three".