7258225729 has 4 divisors (see below), whose sum is σ = 7269990084. Its totient is φ = 7246461376.

The previous prime is 7258225699. The next prime is 7258225757. The reversal of 7258225729 is 9275228527.

7258225729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9275228527 = 43 ⋅215702989.

It can be written as a sum of positive squares in 2 ways, for example, as 878529600 + 6379696129 = 29640^2 + 79873^2 .

It is a cyclic number.

It is not a de Polignac number, because 7258225729 - 2²¹ = 7256128577 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7258225789) 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, 5881252 + ... + 5882485.

It is an arithmetic number, because the mean of its divisors is an integer number (1817497521).

Almost surely, 2^7258225729 is an apocalyptic number.

It is an amenable number.

7258225729 is a deficient number, since it is larger than the sum of its proper divisors (11764355).

7258225729 is a wasteful number, since it uses less digits than its factorization.

7258225729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11764354.

The product of its digits is 1411200, while the sum is 49.

The square root of 7258225729 is about 85195.2212803042. The cubic root of 7258225729 is about 1936.1700156660.

The spelling of 7258225729 in words is "seven billion, two hundred fifty-eight million, two hundred twenty-five thousand, seven hundred twenty-nine".