757225729 has 4 divisors (see below), whose sum is σ = 815473876. Its totient is φ = 698977584.

The previous prime is 757225723. The next prime is 757225739. The reversal of 757225729 is 927522757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927522757 = 7 ⋅132503251.

It can be written as a sum of positive squares in 2 ways, for example, as 48441600 + 708784129 = 6960^2 + 26623^2 .

It is a cyclic number.

It is not a de Polignac number, because 757225729 - 2⁵ = 757225697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (757225723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29124054 + ... + 29124079.

It is an arithmetic number, because the mean of its divisors is an integer number (203868469).

Almost surely, 2^757225729 is an apocalyptic number.

It is an amenable number.

757225729 is a deficient number, since it is larger than the sum of its proper divisors (58248147).

757225729 is a wasteful number, since it uses less digits than its factorization.

757225729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58248146.

The product of its digits is 617400, while the sum is 46.

The square root of 757225729 is about 27517.7348086648. The cubic root of 757225729 is about 911.4687584171.

The spelling of 757225729 in words is "seven hundred fifty-seven million, two hundred twenty-five thousand, seven hundred twenty-nine".